Answer:
B. It increases.
Explanation:
We can use the general law of ideal gas: PV = nRT.where, P is the pressure of the gas in atm.
V is the volume of the gas in L.
n is the no. of moles of the gas in mol.
R is the general gas constant,
T is the temperature of the gas in K.
It is clear that, at constant P, the volume of the gas (V) is directly proportional to the temperature of the gas.
V ∝ T.
So, If a balloon is heated, the volume of the air in the balloon if the pressure is constant:
B. It increases.
Which molecule is polar?
A.) CCl4
B.) CO2
C.) SO3
D.) None of these.
Answer:
A. CCI4
Explanation:
After analyzing the molecular geometry and bond polarities of CCl4, CO2, and SO3, we can conclude that none of these molecules are polar due to the symmetrical arrangement that leads to the cancellation of bond dipoles. The correct answer is D.) None of these.
The question asks to identify which of the listed molecules is polar. To determine if a molecule is polar, we need to assess both the electronegativity differences between bonded atoms and the geometry of the molecule. Molecular polarity arises from an uneven distribution of electron density, leading to a separation of charge.
CCl4 is a molecule with four chlorine atoms symmetrically arranged around a central carbon atom in a tetrahedral structure. The C-Cl bond is polar due to the difference in electronegativity between carbon and chlorine. However, the spatial orientation of the bonds in CCl4 is such that the individual bond polarities cancel out, resulting in a nonpolar molecule.CO2, or carbon dioxide, is a linear molecule with two oxygen atoms bound to a central carbon atom. Although the C=O bond is polar, the linear geometry of CO2 causes the dipoles to cancel each other out, so the molecule itself is nonpolar.SO3, or sulfur trioxide, is a trigonal planar molecule with evenly spaced double bonds between sulfur and oxygen. Like CO2, the individual S=O bonds are polar, but the trigonal planar geometry allows the bond dipoles to cancel, resulting in a nonpolar molecule.Given the symmetrical geometry and cancellation of bond dipoles in CCl4, CO2, and SO3, none of these molecules are polar. Therefore, the correct answer to the question is D.) None of these.
PLEASE HELP PLEASE PLEASE HELP ASAP FOR PLATO!!!
Arrange the bonds in order based on bond length. Start with the longest bond, and end with the shortest bond.
C≡N
bond energy = 887 kJ/mol
C=N
bond energy = 615 kJ/mol
C–N
bond energy = 305 kJ/mol
C-N> C=N > CN The distance between the centers of two atoms that are covalently bonded is known as bond length. The length of the not entirely settled by the number of reinforced electrons. The higher the covalent bond the more grounded the draw between the two particles and the more limited the bond length.
One of the most common bonds in organic chemistry is a carbon–nitrogen bond, which is a covalent bond between carbon and nitrogen. Amines, nitrogen is trivalent and has five valence electrons; the remaining two electrons form a lone pair.
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The bonds in decreasing order of length are: C-N (longest), C=N, and C≡N (shortest). This is because there's an inverse relationship between bond length and bond energy.
Explanation:In Chemistry, there's an inverse relationship between bond length and bond energy. The bond with higher bond energy tends to be shorter because it is stronger and pulls the atoms closer together. Based on this, the bonds in decreasing order of length (longest to shortest) should be: C-N, C=N and C≡N.
The C-N bond has the lowest bond energy (305 kJ/mol) hence it is the longest. The C=N bond has a higher bond energy (615 kJ/mol) than a single bond hence is shorter. The C≡N bond has the highest bond energy (887 kJ/mol) suggesting it's the shortest of the three.
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what equation in the blast furnace extraction of iron is not a redox reaction?
The decomposition of limestone CaCO3 > CaO + CO2
In iron metallurgy with a blast furnace, the non-redox reaction is the decomposition of limestone (calcium carbonate), which forms calcium oxide and releases carbon dioxide.
Explanation:In the processing of iron in a blast furnace with various stages, most of the reactions are indeed redox ones, where reduction of iron ores happen. However, one of the equations that is not a redox reaction is the thermal decomposition of limestone, an impure form of calcium carbonate (CaCO3). This is done to remove unwanted impurities, forming calcium oxide (CaO) and releasing carbon dioxide (CO2). The equation for this reaction is CaCO3(s) → CaO(s) + CO2(g). Here, there's no transfer of electrons indicating that it's not a redox reaction.
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Which law states that the volume and absolute temperature of a fixed quantity of gas are directly proportional under constant pressure conditions?
Boyle’s law
Charles’s law
Dalton’s law
Gay-Lussac’s law
The answer is: Charle's Law.
Why?The law that states that the volume and absolute temperature of a fixed quantity of gas (ideal gas) are proportional under constant pressure is the Charle's Law, also known as the law of volumes.
The law describes how a gas kept under constant pressure tends to expand when the temperature increases and it's described by the following equation:
[tex]\frac{V}{T}=k[/tex]
Where,
[tex]V=Volume\\T=Temperature\\k=constant[/tex]
Also, to describe the relationship between two differents volumes at different temperatures, we have:
[tex]\frac{V_{i}}{T_{i}}=\frac{V_{f}}{T_{f}}[/tex]
Where,
[tex]V_{i}=InitialVolume\\T_{i}=InitialTemperature\\V_{f}=FinalVolume\\T_{f}=FinalTemperature[/tex]
Have a nice day!
Answer:
The answer is C.) Charle's law
Explanation:
100% on edge
CAN SOMEONE PLEASE WRITE ME SHORT STORY FOR THIS. I'LL GIVE YOU BRAINLIEST. I PROMISE. 98 POINTS
Phases of Matter Activity
Now it is your turn to show what you know about phases of matter and thermal energy transfer! Your task is to create a presentation to explain the transformation of a substance as it changes phases. You may choose to write a story or create a comic strip. For your story or comic, you will create a main character and detail the adventure as your character is exposed to thermal energy, causing it to undergo phase changes from a solid, to a liquid, to a gas. You may create your own comic strip using drawings, presentation software, or this comic strip template.
Your presentation must include the following:
title and introduction of your character, including what substance the character is made of
source of thermal energy your character encountered (conduction, convection, and/or radiation)
detailed description and/or diagram of the particle transformation from solid to liquid phase
detailed description and/or diagram of the particle transformation from liquid to gas phase
Answer & Explanation:
Kindly find the attached presentation.
Answer: Start off by figuring out a solid like a ice cube or such then start writing how it changes and what it goes through so say when you apply thermal energy/ heat then it becomes water which is it's liquid state and then continue.
Explanation:
Yogurt has an approximate pH of 5 and vinegar has an approximate pH of 3. How many times more acidic is vinegar compared to yogurt in terms of concentration?
Answer:
The vinegar is highly acidic by 100 times than yogurt.
Explanation:
∵ pH = -log[H⁺]
The concentration of H⁺ in yogurt:
∵ pH = -log[H⁺]
∴ 5 = -log[H⁺]
∴ [H⁺] = 1.0 x 10⁻⁵ M.
The concentration of H⁺ in vinegar:
∵ pH = -log[H⁺]
∴ 3 = -log[H⁺]
∴ [H⁺] = 1.0 x 10⁻³ M.
the ratio of H⁺ in vinegar to that in yogurt = 1.0 x 10⁻³ M / 1.0 x 10⁻⁵ M = 100.0.
∴ The vinegar is highly acidic by 100 times than yogurt.
Based on the size and shape of the clasts in the sedimentary rock shown in the image, which classification would geologists most likely apply to the rock?
A. Conglomerate B. Sandstone C. Mudrock D. Breccia
Answer:
D. Brecci
The pattern of the rock below resembles the distinct pattern of brecci.
The pattern of conglomerate usually appears to be more round peices in the rock. The pattern of brecci has a more shard like appearance.
Hope this helps,
One of the virtuosos on Brainly
Answer:
The correct answer is option D, that is, breccia.
Explanation:
The clastic sedimentary rocks, which are formed of large angular pieces are termed as breccia. The gaps in between the large angular pieces are occupied with a matrix of smaller constituents and a mineral cement, which holds the rock together. The formation of breccia takes place when the angular and dissociated pieces of minerals or rock debris gather.
the molar mass of a certain gas is 49 g. What is the density of the gas in g/L at STP?
Answer:
[tex]\boxed{\text{2.2 g/L}}[/tex]
Explanation:
We can use the Ideal Gas Law to calculate the density of the gas.
pV = nRT
n = m/M Substitute for n
pV = (m/M)RT Multiply both sides by M
pVM = mRT Divide both sides by V
pM = (m/V) RT
ρ = m/V Substitute for m/V
pM = ρRT Divide each side by RT
[tex]\rho = \frac{pM }{RT}[/tex]
Data:
p = 1.00 bar
M = 49 g/mol
R = 0.083 14 bar·L·K⁻¹mol⁻¹
T = 0 °C = 273.15 K
Calculation:
ρ = (1.00 × 49)/(0.083 14 × 273.15) = 2.2 g/L
The density of the gas is [tex]\boxed{\text{2.2 g/L}}[/tex].
aFinal answer:
The density of a gas with a molar mass of 49 g/mol at STP is calculated as 2.1875 g/L by dividing the molar mass by the molar volume of a gas at STP which is 22.4 L/mol.
Explanation:
The question asks about the density of a gas with a known molar mass at standard temperature and pressure (STP). At STP, we can utilize the ideal gas behavior which states that one mole of any gas occupies 22.4 liters. To find the density at STP, you use the molar mass of the gas and the volume that one mole occupies.
To calculate the density of the gas, you would use the formula:
Density (d) = Molar mass (M) / Molar volume at STP (V)
Since we know that the molar mass (M) of the gas is 49 g/mol, and the molar volume (V) at STP is 22.4 L/mol, we can plug these into the density equation:
d = M / V = 49 g/mol / 22.4 L/mol
Thus, d = 2.1875 g/L.
Hence, the density of the gas at STP is 2.1875 g/L.
Examine the images.
Which option is a phase change that occurs between liquids and gases?
Select all that apply.
Answer:
4 th image
Explanation:
water is being boiled n the 4th image indicating that the change between liquids and gasses is water vapor.
Answer:
The soda bottles and the boiling water
Explanation:
just trust
Calculate the mass-to-mass ratio of 25.0 g of salt in 105 g of water. Work must be shown in order to earn credit.
Answer:
0.23
Explanation:
It is known that, the mass to mass ratio of the salt to water= (mass of salt / mass of water)
= (25.0 g / 105.0 g)
= 0.23
So, the answer is 0.231.
A student looked up the naturally occurring isotopes of bromine and found the following information:
50.54% of the naturally occurring isotopes of bromine have an atomic mass of 78.92 amu while 49.46% of the
naturally occurring isotopes of bromine have an atomic mass of 80.92 amu. Calculate the average atomic mass of
bromine. SHOW ALL WORK
Answer:Tationia Rolon
Explanation:
Use this it might help:
Answer: The average atomic mass of bromine is 79.91 amu.
Explanation:
Average atomic mass of an element is defined as the sum of masses of each isotope each multiplied by their natural fractional abundance.
Formula used to calculate average atomic mass follows:
[tex]\text{Average atomic mass }=\sum_{i=1}^n\text{(Atomic mass of an isotopes)}_i\times \text{(Fractional abundance})_i[/tex] .....(1)
For isotope 1:
Mass of isotope 1 = 78.92 amu
Percentage abundance of isotope 1 = 50.54 %
Fractional abundance of isotope 1 = 0.5054
For isotope 2:
Mass of isotope 2 = 80.92 amu
Percentage abundance of isotope 2 = 49.46 %
Fractional abundance of isotope 2 = 0.4946
Putting values in equation 1, we get:
[tex]\text{Average atomic mass of Bromine}=[(78.92\times 0.5054)+(80.92\times 0.4946)][/tex]
[tex]\text{Average atomic mass of Bromine}=79.91amu[/tex]
Hence, the average atomic mass of element bromine is 79.91 amu.
A patient has an order for a drip at 7mg of medicine per hr the iv drip is provided from the pharmacy as 1000mg in 500ml of dextrose 5% in water. Calculate the flow rate of the pump in ml per hour.
Answer:
3.5 mL/hr.
Explanation:
As mentioned the patient needs to take 7 mg of medicine per hr.Also, as given the sample contains 1000 mg in 500 ml of dextrose 5% in water which means it contains (2 mg/mL).Every 1.0 mL contains 2 mg of the medicine.It needs 7 mg per hr.So, the rate of the pump in ml per hour will be = (7 mg)/(2 mg/mL)(1 hr) = 3.5 mL/hr.
Final answer:
To provide a patient with 7 mg of medication per hour from a solution of 1000 mg in 500 ml, the flow rate of the pump needs to be set at 3.5 ml per hour.
Explanation:
To calculate the flow rate of the pump in ml per hour for a medication order of 7 mg per hour, when the IV solution provided is 1000 mg in 500 ml, we use the proportion method. This involves setting up a proportion between the strength of the solution and the required dose to find the volume of solution that corresponds to the required dose.
First, we determine how many milligrams are in each milliliter of the solution: 1000 mg in 500 ml means there are 2 mg in each ml (1000 mg / 500 ml = 2 mg/ml). Then, knowing the patient needs 7 mg per hour, to find out how many milliliters that is, we divide the needed dose by the concentration: 7 mg / (2 mg/ml) = 3.5 ml per hour.
This calculation shows that to administer 7 mg of medicine per hour, the flow rate must be set to 3.5 ml per hour.
The pressure of gas in a cylinder is 70 kilopascals. If the volume of the cylinder is reduced from 8.0 liters to 4.0 liters, what should be the pressure of the gas in the cylinder?
Answer:
140kpa
Explanation:
Answer:
140 kilopascals should be the pressure of the gas in the cylinder.
Explanation:
Boyles alw:
[tex]P_1V_1=P_2V_2[/tex]
[tex]P_1=70 kilopascals[/tex]
[tex]V_1=8.0 L[/tex]
[tex]P_2=?[/tex]
[tex]V_2=4.0 L[/tex]
[tex]P_2=\frac{P_1\times V_1}{V_2}=\frac{70 kilopascals\times 8.0 L}{4.0 L}=140 kilopascals[/tex]
140 kilopascals should be the pressure of the gas in the cylinder.
How many moles of KCIO3 must completely react to produce 6 moles of O2?
The answer is:
4 moles of [tex]KClO_{3}[/tex] are required to produce 6 moles of [tex]O_{2}[/tex]
Why?To solve stoichiometric problems, we need to write the balanced equation of the compound that we are working with.
Potassium chlorate decomposition is given by the following equation:
[tex]2KClO_{3}->3KCl+3O_{2}[/tex]
Now, from the equation we know that 3 moles of [tex]O_{2}[/tex] gives 2 moles of [tex]2KClO_{3}[/tex], we can calculate how many moles of the same compound react to produce 6 moles of [tex]O_{2}[/tex] the following equation:
[tex]\frac{No.molKClO_{3}}{6molO_{2}}=\frac{2molKClO_{3}}{3molO_{2}}\\\\No.molKClO_{3}=6molO_{2}*\frac{2molKClO_{3}}{3molO_{2}}\\\\No.molKClO_{3}=4molKClO_{3}[/tex]
Hence, we have that 4 moles of [tex]KClO_{3}[/tex] are required to produce 6 moles of [tex]O_{2}[/tex]
Have a nice day!
What technological development led to the discovery of the existence of subatomic particles?
Answer:
Thomson had discovered the first subatomic particle, the electron. Six years later Ernest Rutherford and Frederick Soddy, working at McGill University in Montreal, found that radioactivity occurs when atoms of one type transmute into those of another kind
Explanation:
What are the answers?
For Number 2 It Is The Law Of Conversation Of Mass
Number 3 Atoms Of Each Element
Number 7 Oxygen
Number 5 Single Replacement Reaction
I answered a few of them
Which of the following is a proper buffer substituent pair?
a.
oxalic acid and lithium oxalate
c.
Neither a nor b
b.
carbonic acid and sodium carbonate
d.
Both a and b
Answer:
[tex]\boxed{\text{c. Neither a nor b is correct}}[/tex]
Explanation:
A buffer pair consists of either
A weak acid and its salt orA weak base and its salt(a) Oxalic acid and sodium oxalate
[tex]\rm H$_2$C$_2$O$_4$ + Li$_2$C$_2$O$_4$ \longrightarrow \, $2LiHC$_2$O$_4$[/tex]
Oxalic acid is an acid and lithium acid is a base. Together, they will neutralise each other and form the salt LiHC₂O₄.
A solution of LiHC₂O₄ is not a buffer.
The correct buffer pair is H₂C₂O₄ and LiHC₂O₄
(b) Carbonic acid and sodium carbonate
[tex]\rm H$_2$CO$_3$ + Na$_2$CO$_3$ $\longrightarrow \,$ 2NaHCO$_3$[/tex]
The carbonic acid and the sodium carbonate will neutralise each other and form the salt NaHCO₃.
A solution of NaHCO₃ is not a buffer.
The correct buffer pair is H₂CO₃ and NaHCO₃
[tex]\boxed{\textbf{Neither a nor b is correct}}[/tex]
what is the mass in grams of 0.257 mol of sucrose (C12H22O11)?
Answer:
87.894 grams.
Explanation:
So we know that the mass of the carbon is 12g, the Mass of the Hydrogen is 1g and the Mass of the Oxygen is 16g. Given, Chemical Formula of the Sucrose C₁₂H₂₂o₁₁ we can calculate the molar mass by performing the following operation:
Molar Mass = 12 × 12 + 1 × 22 + 16 × 11 = 144 + 22 + 176 = 342 g/mole
So if we need to know the mass in grams of 0.257 mol, then we have to:
342 g/mole * 0.257 mol = 87.894 grams.
The mass in grams is: 87.894 g
HELP PlEASE
What are long chains of carbon molecules called?
Question 1 options:
atoms
polymers
monomers
bonds
Question 2
Which of the following is not an organic compound?
Question 2 options:
protein
methane
corn oil
aluminum
Question 3 (5 point)
What are fossil fuels made from?
Question 3 options:
inorganic compounds
corn oil
hydrocarbons
polyethylene
Question 4 (7 point)
Repeating units in an organic compound are called __________.
Question 4 options:
hydrocarbons
amino acids
polymers
monomers
Question 5 (3 point)
What are the properties of organic compounds determined by?
Question 5 options:
their boiling point
their ability to react with acids
their functional group
the total number of hydrogen atoms
Question 6 (1 point)
What are shopping bags and plastic bottles made of?
Question 6 options:
alkyl groups
halogens
polyethylenes
hydrocarbons
Question 7 (4 point)
One functional group of organic molecules is an alkene. Which of the following is NOT a property of an Alkene?
Question 7 options:
double bond between two carbon atoms
stronger bonds
release more energy when burned
contain a chlorine atom
Answer:
1 Polymer
2 Aluminum
3 Hydrocarbons
4 monomers
5 their functional group
6 polyethylene
Explanation:
i took the test
Polymer are the long chains of carbon molecules .
Aluminum among the following is not an organic compound.
Fossil fuels are made from hydrocarbons.
Repeating units in an organic compound are called monomers
The properties of organic compounds determined by their functional group .
Shopping bags and plastic bottles are made up of polyethylene .
Contain chlorine atom is not a property of alkene.
What do you mean by the following terms ?PolymerAluminumHydrocarbonsMonomersFunctional groupPolyethyleneChlorine atom
Polymer-A polymer is a substance or material consisting of very large molecules, called macromolecules .
Aluminum-Aluminum is a chemical element with the symbol Al and atomic number 13.
Hydrocarbons-Theses are the class of organic chemical compounds composed only of the elements carbon (C) and hydrogen (H).
Monomers-A monomer is a molecule that forms the basic unit for polymers, which are the building blocks of proteins.
Functional group-An atom or group of atoms that replaces hydrogen in an organic compound.
Polyethylene-Polyethylene is a polymer made of repeating ethylene units.
Chlorine atom-Chlorine is a chemical element with the symbol Cl and atomic number 17 .
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How Do You Round In Molar Mass
For molar mass try to use as many decimal places as possible to be the most accurate. The number of sig figs in your final answer will still be the same as the initial amount of sig figs in the mass given (or whatever value given that has the least amount of sig figs)
Answer:
decimals
Explanation:
Fluorine exerts a pressure of 1.2 atm on a piston. When the pressure is changed to 1.1 atm, its volume is 556.1 mL. What was the original volume in mL? Solve the the nearest two decimal places.
Answer:
509.7583 mL ≅ 509.76 mL.
Explanation:
We can use the general law of ideal gas: PV = nRT.where, P is the pressure of the gas in atm.
V is the volume of the gas in L.
n is the no. of moles of the gas in mol.
R is the general gas constant,
T is the temperature of the gas in K.
If n and T are constant, and have different values of P and V:
(P₁V₁) = (P₂V₂)
P₁ = 1.2 atm, V₁ = ??? mL.
P₂= 1.1 atm, V₂ = 556.1 mL.
∴ V₁ = (P₂V₂)/(P₁) = (1.1 atm)(556.1 mL)/(1.2 atm) = 509.7583 mL ≅ 509.76 mL.
A ball rolls 12 meters in 4 seconds.What is the average speed of the ball?
1. 3 meters/seconds
2.8 meters/seconds
3.16 meters/seconds
4.48 meters/seconds
Answer:
3 meters/second
Explanation:
Speed is roughly defined as distance travelled over a unit of time. So we can calculate the speed of the ball using the formula:
[tex]s=\dfrac{d}{t}[/tex]
where:
s = speed
d = distance
t = time
Given:
d=12 meters
t = 4 seconds
So we plug that in our equation:
[tex]s=\dfrac{d}{t}[/tex]
[tex]s=\dfrac{12meters}{4seconds}[/tex]
[tex]s=3\dfrac{meters}{second}[/tex]
Final answer:
The average speed of the ball is 3 meters per second, calculated by dividing the distance of 12 meters by the time of 4 seconds.
Explanation:
The question asks for the average speed of a ball that rolls 12 meters in 4 seconds. To calculate the average speed, you divide the total distance traveled by the total time taken. In this case, that would be 12 meters divided by 4 seconds, yielding an average speed of 3 meters per second.
An copper mass is heated and placed in a foam cup calorimeter containing 45.0 mL of water at 24.0 degrees celcius. The water reaches a temparture of 75 degrees celcius. How many joules of heat were released by the copper? The density of water is 1g/mL. The specific heat of water is 4.18 J/g degrees Celsius.....
Please show work
Answer:
= 9,593.1 Joules
Explanation:
Heat absorbed by water is equivalent to heat released by copper.
Heat absorbed is given by;
Q = mcΔT
where m is the mass, c is the specific capacity and ΔT is the change in temperature.
Therefore;
Since dnsity of water is 1 g/mL, and specific heat capacity is 4.18 J/g°C while the change in temperature is (75-24) = 51°C.
Heat absorbed by water = 45 g × 4.18 J/g°C × 51
= 9,593.1 Joules
Therefore, the heat released by copper is 9,593.1 Joules
Which of the following is a cause of eutrophication of a lake?
Eutrophication is caused by an excess amount of nutrients within the water. These nutrients can be collected within a lake by runoff from a agricultural area filled with fertilizers, etc etc. The algae within the body of water would grow at a rapid rate, causing a depletion for oxygen within the water and the lack of sunlight underneath the water surface.
A large amount of dust and ash from a recent volcanic eruption settles in the region, which is most likely to survive, deer, fish in a pond, grass or trees
Answer:
A deer
Explanation:
Volcanic Ash and dust would cover the surface of the pond. This would prevent the growth of planktons which serves as food for them. Sunlight would not be able to penetrate the pond to furnish it with a very important ingredient for photosynthesis. As we know that most fishes are heterotrophs.
For grasses and trees, the dust and Ash particles would cover the leaves which is the site of photosynthesis. Plants are autotrophs that manufactures their own food through sunlight and carbondioxie. Most of the plants would die off since they can't remove the Ash and dust covering on them.
A deer is an heterotroph and a motile animal. It can easily leave that region and source for food elsewhere in the ecosystem.
Fish in a pond are most likely to survive a volcanic eruption with heavy ash fall, as they are somewhat protected from the immediate effects, while deer, trees, and grass may struggle significantly due to the impact on their habits and food sources.
Explanation:Following a volcanic eruption that deposits a large amount of dust and ash in a region, different forms of wildlife will have varying chances of survival depending on their adaptability and the impact of the eruption on their specific habitats and food sources. For deer, their survival might be compromised as the ash can cover the vegetation they rely on for food and they might also suffer from respiratory issues caused by the ash particles. Trees might also struggle to survive if the ash is thick enough to block sunlight and damage their leaves, leading to reduced photosynthesis. Grass could potentially revive from such an event if the ash layer is not too thick and can actually be enriched by the mineral content of the ash over time, if they are not smothered. Fish in a pond would likely have the best chance of survival assuming the ash fall does not drastically change the pH or temperature of the water. They are somewhat insulated from the immediate effects of the ash fall and might survive even when other wildlife struggles.
A scuba diver 25.0m below the sea surface inhales 75.0mL of compressed air in a scuba tank at a pressure of 3.50atm and a temperature of 5.0C. What is the pressure of the air in the lungs if the gas expands to 215.0mL at the body temperature of 37.2C?
Final answer:
Using the Combined Gas Law, the pressure of the air in the lungs is calculated to be 1.228 atm when it expands to 215.0 mL at the body temperature of 37.2°C.
Explanation:
The question involves applying the Combined Gas Law to determine the pressure of the air in the lungs of a scuba diver when it expands from the scuba tank conditions to the lungs' conditions. The initial pressure (P1) is 3.50 atm, and the initial volume (V1) is 75.0 mL at an initial temperature (T1) of 5.0°C (278.15 K). The final volume (V2) is 215.0 mL, and the final temperature (T2) is 37.2°C (310.35 K).
To find the final pressure (P2), we can rearrange the Combined Gas Law:
P1 × V1 / T1 = P2 × V2 / T2
Solving for P2:
P2 = (P1 × V1 × T2) / (V2 × T1)
P2 = (3.50 atm × 75.0 mL × 310.35 K) / (215.0 mL × 278.15 K)
P2 = 1.228 atm
The pressure of the air in the lungs, when it expands to 215.0 mL at the body temperature of 37.2°C, is 1.228 atm.
Which unit of measurement should be used for the vertical axis? A. millimeters B. centimeters C. kilometers D. decimeters
Answer:
Hmmmm...
Well, the only option that actually makes sense to me is
C. Kilometers (km)
Please tell me if i'm wrong, but i feel really good about this one. Also, if i can help at all, just ask lol
Centimeters are the appropriate unit to use on the vertical axis for measuring objects like pieces of paper or textbooks as they provide a balance between practicality and precision.
Explanation:When selecting the appropriate unit of measurement for the vertical axis, one must consider the size of the object being measured. In this case, if we were measuring an item such as a piece of paper or a textbook, we would need a unit that allows us to measure a relatively modest size. The metric units of length range from very small units like millimeters, which are suitable for tiny objects, to kilometers, meant for measuring much larger distances. For example, millimeters would be a good choice for measuring a paper clip with precision. However, since a piece of paper or a textbook can be held easily and are larger, centimeters are the most commonly used and appropriate metric unit. It is versatile for day-to-day objects of similar sizes.
For measuring a textbook, centimeters offer a balance between precision and practicality without being too small like millimeters or too large like meters or kilometers. Therefore, centimeters would be the appropriate choice for the vertical axis when measuring common school supplies like a piece of paper or a textbook. Figure 1.24 provides examples of different metric rulers, where the one showing centimeters would be the best fit for our case.
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1s2 2s2 2p6 3s2 3p6 is the electron configuration for
Answer: Argon (Ar)
Explanation:
The reason why it is Argon is because when you add the electrons 2+2+6+2+6, there will be 18 electrons total and the number 18 is also from the atomic number. I just learned this a while ago and remembered how to do it since you need help with this. I hope this helps and have a good day!
The atomic number 18 element argon (Ar), which has the electron configuration 1s2 2s2 2p6 3s2 3p6, is represented by the electron configuration you gave.
The distribution of electrons in an atom's energy levels, sublevels, and orbitals is shown by the electron configuration notation. The electron configuration in this situation shows that argon has 18 total electrons. This electron configuration, which is typical of the noble gas configuration found in argon, represents a filled third energy level (n = 3), as well as a filled second energy level (n = 2).
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What does a graph representing Charles’s law show?
Charles's law, depicted graphically, shows a direct proportional relationship between gas volume and its temperature, given a steady pressure. This is represented by a graph with a positive linear correlation.
Explanation:A graph representing Charles's law shows the relationship between the volume and the temperature of a gas at constant pressure. Specifically, it will illustrate a straight line with a positive slope, reflecting that as temperature increases, volume increases proportionally, and vice versa. This is an essential concept in thermodynamics.
For example, when a balloon is heated, its internal volume increases even when the amount of air within remains constant. This response is a direct demonstration of Charles's law. So, are line graphs that perfectly represent the direct relationship between gas temperature and volume.
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How many bonds does carbon atom form
Answer: Four Bonds
Explanation:
A carbon atom can form at max four bonds, for example with Hydrogen. Since carbon has 4 electrons, it needs four more electrons to achieve the noble gas state. Carbon needs four more hydrogens, which has one electron, to bond four bonds