Answer: B. Tornado
Explanation: A tornado is a violent rotating column of air extending from a thunderstorm to the ground. The most violent tornadoes are capable of tremendous destruction with wind speeds of up to 300 mph. They can destroy large buildings, uproot trees and hurl vehicles hundreds of yards. They can also drive straw into trees.
Severe weather that doesn't serve as intense tropical storm is B:
tornado.
Tropical storm can be regarded as organized centre of low pressure which can considered to be experienced over warm tropical oceans.These storms serve as an intermediate stage that gap loosely organized tropical depressions as well as more intense tropical cyclones.The severe type includes typhoon, tropical cyclone and hurricane.Therefore, option B is correct.
Learn more at:
https://brainly.com/question/15368564?referrer=searchResults
where are the electrons found in Bohrs atomic atom
a. the electrons orbit the protons at the atoms center.
b. the electrons circle the nucleus in specific orbits.
c. the electrons occupy the atoms center, with protons orbiting.
d. the electrons are evenly distributed throughout the atom.
Answer:
The elections circle ITS B TRUST ME I JUST DID IT
Explanation:
Apex
The electrons circle the nucleus in specific orbits in Bohr's atomic atom.
Hence, Option (B) is correct answer.
What is Bohr's Atomic Model ?According to the Bohr's Atomic model the electrons orbit the nucleus at fixed energy levels. This model was proposed by Neil Bohr in 1915.
What is Orbit ?The electrons which move around in predictable path is known as orbit.
Thus from the above conclusion we can say that The electrons circle the nucleus in specific orbits in Bohr's atomic atom.
Hence, Option (B) is correct answer.
Learn more about the Bohr's Atomic Model here: https://brainly.com/question/18002213
#SPJ2
Can you accurately determine a person genotype just by observing their phenotype
Answer:
Yes.
Explanation:
All of the heterozygous pairs are either really close or the same as the homozygous.
What is bias in an experiment?
a process where the scientists performing the research influence the results, in order to show a certain result
Answer:
Explanation:
An experimental bias can be define as the type of variable which is selectively chosen so as to obtain a desired result. It can also be said that a bias can be any kind of manipulation which is done by the experimenter so as to obtain a desired outcome or findings of the experiment. An experimenter can also take the advantage of choosing the desired samples from the collection of samples.
To avoid bias, a blinded study can be used in which the random variables as well as no bias while collecting the samples for study takes place.
A certain reaction has an equilibrium constant of 3.5 × 108 at 25°C and 6.0 × 10–2 at 500°C. Is the reaction exothermic or endothermic?
Answer:
The reaction is exothermic.
Explanation:
When the temperature changes in a balanced system, it ceases to be in equilibrium because the value of the equilibrium constant is modified. Thus, at a temperature T1 the constant is K1, and at a temperature T2, the constant is K2. The relationship between these magnitudes is given in the so-called Van't Hoff equation.
The Wan't Hoff equation is:
[tex]\frac{lnK1}{lnK2}=-\frac{H}{R} (\frac{1}{T1}-\frac{1}{T2})[/tex]
Where:
ΔH: standard enthalpy of the reaction
R: constant of ideal gases
K1: equilibrium constant at temperature T1
K2: equilibrium constant at temperature T2
The Van't Hoff equation allows us to study how the chemical equilibrium shifts with temperature depending on whether we have an endothermic or exothermic reaction. So if the reaction is exothermic, ΔH <0, increasing the temperature decreases the equilibrium constant and the reaction moves to the left, while if the temperature decreases, the equilibrium constant increases and the equilibrium moves to the right.
Therefore, given the values of the equilibrium constant at different temperatures and observing that it decreases when the temperature rises, the reaction is exothermic.
Sally wants to see which fertilizer makes tomato plants grow the tallest. She use 3 types (A, B, C) and leaves one group in soil without any fertilizer. Identify the independent variable, dependent variable, and the control group in this experiment.
Answer:
Independent: The types of fertilizer. (Independent I Change)
Dependent: The plants height. (Dependent is Dependent on the Independent)
Control: The Type of plants (What isn't being changed throughout the experiment.)
What is the energy content in joules of a 1.28g sample of oatmeal that raises the temperature of 1.50 kg of water in a calorimeter from 25.0 C to 27 C
Answer:
12560 J.
Explanation:
To calculate the energy, we use the relation:The amount of heat absorbed by water = Q = m.c.ΔT.
where, m is the mass of water (m = 1.5 kg = 1500.0 g).
c is the specific heat capacity of water = 4.186 J/g°C.
ΔT is the temperature difference = (final T - initial T = 27°C - 25°C = 2°C).
∴ The amount of heat absorbed by water = Q = m.c.ΔT = (1500.0 g)(4.186 J/g°C)(2°C) = 12560 J.
Select the correct location on the image.
Which element has the largest atomic radius?
Answers options are in the photo attached...
Answer:
Ba.
Explanation:
Atomic radius decreases across the period and increases across the group.
Atomic radius of Be = 153 pm.
Atomic radius of F = 147 pm.
Atomic radius of Ga = 187 pm.
Atomic radius of Ba = 268 pm.
∴ The element that has the largest atomic radius is Ba.
Which of these definitions could be used to define SO2 as a base? Check all that apply. Arrhenius concept Bronsted-Lowry concept Lewis concept
Answer:
Lewis concept
Explanation:
edg
Lewis concept could be used to define SO[tex]_2[/tex] as a base. Inorganic chemical sulfur dioxide (SO[tex]_2[/tex]) is a heavy, colorless gas.
What is sulfur dioxide?Inorganic chemical sulfur dioxide (SO2) is a heavy, colorless gas that is very toxic. It is created in enormous amounts during the transitional stages of the production of sulfuric acid. The stench of sulfur dioxide is as strong and unpleasant as that of a freshly struck match.
Sulfur dioxide, which naturally occurs as volcanic gases and also in solution inside the waters of certain warm springs, is often made industrially by burning sulfur or other sulfur-containing compounds like iron pyrite and copper pyrite in air or oxygen. Lewis concept could be used to define SO[tex]_2[/tex] as a base.
Therefore, lewis concept could be used to define SO[tex]_2[/tex] as a base.
To learn more about sulfur dioxide, here:
https://brainly.com/question/17021671
#SPJ6
PLEASE HELP ASAP ILL GIVE BRAINLIEST ITS PLATO!!!
———————————
An uncovered pot of water lies out in the sun. Which statements correctly describe what happens at the surface of the liquid water? (More than one answer)
——————————
1) The vapor pressure remains constant regardless of the water temperature.
2)The vapor pressure is produced by water molecules that have evaporated.
3) The vapor pressure increases as the Sun heats the water in the pot.
4) Evaporation stops once the vapor pressure reaches a certain point.
5) Evaporation and condensation both occur on the liquid’s surface.
Explanation:
At a given temperature, the pressure exerted by the vapors on its condensed phases in a closed system is known as vapor pressure.
Therefore, when an uncovered pot of water lies out in the sun then heat caused due to radiation of sun will heat the water. As a result, vapors start to form after a certain interval.
So, when heat inside the system increases then there will be increase in vapor pressure of the system.
Thus, we can conclude that the following statements correctly describe what happens at the surface of the liquid water:
The vapor pressure is produced by water molecules that have evaporated.The vapor pressure increases as the Sun heats the water in the pot.If 6.1 moles of copper react completely with 6.1 moles of oxygen, what is the mole ratio for the compound
Answer:
CuO with (1: 1) mole ratio.
Explanation:
When 6.1 moles of copper react completely with 6.1 moles of oxygen.They are equimole reactants with a (1: 1) mole ratio.Then, the compound has the molecular formula CuO.Element Y is composed of three isotopes; Y-20 is 15.00%, Y-22 is 50.00%, and Y-24 is 35.00%. What is the element Y’s relative atomic mass
We take in account the following formula tot determine the relative atomic mass:
Relative atomic mass = atomic mass of isotope (1) × abundance of isotope (1) +
atomic mass of isotope (2) × abundance of isotope (2) + ... and so on
For element Y we have:
Relative atomic mass of Y = 20 × 0.15 + 22 × 0.5 + 24 × 0.35 = 22.4
-Please answer if you are sure!-
The question is:
How many seconds does it take light from the sun to reach Earth? How many nimutes is this? Show work.
(don't google it, i must answer based on numbers given to me)
Here's what it gives me to find the answer:
Light travels at a speed of 0.002 AU per second,
Earth is 1.00 AU from the sun (distance)
Earth's diameter is 12,00 (km)
Can you PLEASE tell me what numbers i need to put together to get the answers? i have multiple questions like this and i don't know how to solve.
Answer:8.35
Explanation:first subtract 0.002 by 1.00 witch is 1.002 then divid by 12,00 witch is 8.35
Which of these is a physical property?
malleable
easy to digest
does not burn
becomes moldy quickly
ty ^^
Answer: malleable
Explanation:
Chemical property is defined as the property of a substance which is observed during a reaction where the chemical composition identity of the substance gets changed.
Physical property is defined as the property which can be measured and whose value describes the state of physical system. For Example: State, density etc.
Malleable is a physical property as it is the ability to be beaten into sheets which means only shape changes.
Easy to digest is a chemical property as it requires oxidation of food.
Does not burn easily is a chemical property as it requires oxidation .
Becomes moldy quickly is a physical property as it requires oxidation .
Answer:
malleable
Explanation:
i did the test and got it correct
protons and neutrons are made from which of the following?
hadrons
down quarks only
up quarks and down quarks
up quarks only
Answer: it would be c. Protons are made of two Up and one Down quark. The neutron is made of two Down and one Up quark
Protons and neutrons are made up from quarks and in protons two up quarks & in neutron two down quarks are present.
What are quarks?Quarks are the fundamental or elementary particle of any matter present in the system, and quarks are combined together for the formation of a hadron.
Protons and neutrons are the examples of hadrons which are also made up of quarks.
Protons are formed by the combination of two ups quarks and one down quark.Neutrons are formed by the combination of two dowm quarks and one up quark.Hence protons and neutrons are formed by the quarks.
To know more about quarks, visit the below link:
https://brainly.com/question/10253303
Elaborate on the role of activation energy in chemical reactions. A) Decreasing the activation energy leads to higher randomness within the reaction and an increased reaction rate. B) Activation energy is the minimum energy colliding reactants need to combine and for the chemical reaction to occur. C) The activation energy and randomness indicate the reduced likelihood that the barrier is overcome and a decreased rate. D) Higher activation energy indicates a higher randomness and the energy barrier is overcome with an increased reaction rate.
B is right answer ithink bro/sis
Answer:
A and B
Explanation:
The activation energy is the minimum energy necessary for the reaction to happen. It is a barrier, the reaction only occurs if the reactants have that energy.
As higher is the activation energy, as difficult is to the reaction happens, and because of that, the reaction rate will be small. The rate indicates the reaction velocity, which is the velocity of the collisions of the molecules, with more collisions, higher randomness is presented, and higher is the velocity.
A) Correct. As less energy is necessary, as higher is the velocity of the reaction, so the randomness and the rate will increase.
B) Correct. Is the definition of activation energy.
C) Incorrect. They indicate the rate of the reaction, and how easy or not it will be to the reaction happen.
D) Incorrect. As higher is the activation energy, as low is the randomness and the rate of the reaction.
Which energy source contributes to the greatest emissions of gases in the environment during the energy production process
Answer:
Natural gas, emitting fewer harmful chemicals into the atmosphere than other fossil fuels, can help to mitigate some of these environmental issues. These issues include: Greenhouse Gas Emissions. Smog, Air Quality and Acid Rain
Explanation:
Final answer:
Coal combustion, part of the fossil fuels category, contributes the most to greenhouse gas emissions during energy production, particularly carbon dioxide (CO2). However, renewable energy alternatives like solar and wind power present viable solutions to reduce these emissions.
Explanation:
The energy source that contributes to the greatest emissions of gases in the environment during the energy production process is the burning of fossil fuels, notably coal, oil, and natural gas. This is primarily due to their capacity to release significant amounts of carbon dioxide (CO2) when combusted. Coal is the most carbon-intensive of these fuels, especially when used for electricity generation, leading to the highest CO2 emissions per unit of energy produced.
Coal combustion not only releases more greenhouse gas carbon dioxide per unit of energy output than any other energy-yielding process but also produces pollutants like fly ash and sulfur dioxide. However, innovations in renewable energy sources such as solar and wind power are emerging as viable alternatives to reduce reliance on fossil fuels and mitigate greenhouse gas emissions.
Given the significant environmental impact of burning fossil fuels, transitioning to renewable energy sources, enhancing energy efficiency, and investing in green technology research and development are critical steps toward combating climate change and reducing global greenhouse gas emissions.
what is the grams of carbon dioxide needed to occupy a container that is 9 liter at 32 degrees Celsius and 35 kpa
Answer:
44.01 g/mol.
Explanation:
We can use the general law of ideal gas: PV = nRT.where, P is the pressure of the gas in atm (P = 35.0 kPa/101.325 = 0.345 atm).
V is the volume of the gas in L (V = 9.0 L).
n is the no. of moles of the gas in mol (n = ??? mol).
R is the general gas constant (R = 0.0821 L.atm/mol.K),
T is the temperature of the gas in K (T = 32.0°C + 273 = 305.0 K).
∴ n = PV/RT = (0.345 atm)(9.0 L)/(0.0821 L.atm/mol.K)(305.0 K) = 0.124 mol.
∴ n = mass/molar mass
∴ mass = (n)(molar mass) = (0.124 mol)(44.01 g/mol) = 5.457 g.
Based on the image how many protons does carbon have
Carbon has 6 protons.
Hope that helped you!
I think the answers is D.12
what type of solar radiation is the most powerful
Answer:
Gamma Rays are the most powerful kind of rays :p
Gamma rays are the most powerful type of solar radiation! If you need to know more on how harmful they are and what they can do let me know!
A disruption to an established ecosystem can lead to:
A.) more resources for all the organisms that make up the community.
B.) new organisms being prevented from moving into the area.
C.) hurricanes or volcanic eruptions.
D.) changes in the populations of the community.
Answer:
D.) changes in the populations of the community
Explanation:
Any disruption of any ecosystem always leads to some changes, some minor ones, some dramatic ones. All of the organisms living in a particular ecosystem are adapted to live in the conditions that it provides, so when a change occurs it causes a big stress on the populations. Depending on the change that has occurred, it can cause changes in the populations, or it can even cause extinction to some populations.
How are the positive and negative areas created a molecule? Why is this important?
Answer:
The unequal sharing of electrons gives the water molecule a slight negative charge near its oxygen atom and a slight positive charge near its hydrogen atoms. When a neutral molecule has a positive area at one end and a negative area at the other, it is a polar molecule.
Hope this helps
Nitrogen has an atomic mass of about 14 amu and an atomic number of 7. How many neutrons does nitrogen have ?
Answer:
The atomic mass is 14, which is the combined mass of protons and neutrons. The atomic number is the number of protons. SO if we have a total mass of 14 and we know 7 of that is protons, 14-7=7
the nitrogen has 7 neutrons
is Tetracarbon decoxide ionic or covalent?
Answer: covalent bond
Explanation: Tetracarbon Hexahyride is built using covalent bonds
Hope this helps please mark brainlist it would be greatly appreiciated :)
4Fe + 3O2 → 2Fe2O3
Iron combines with oxygen to form rust. Given the chemical reaction, how many grams of rust would be produced if 3 grams of reactants were consumed?
A) 0 grams
B) 1 gram
C) 3 grams
D) 7 grams
Answer:
C, 3g
Explanation:
4Fe + 3O2 = 3g
Since the number of atoms are same on the both sides of equation same amount of rust will be produced. Therefore 3g of Fe2O3 will be produced.
Answer:
the answer is 3 grams
Which scientist performed the cathode ray experiment leading to the discovery of electrons?
A.
Dalton
B.
Rutherford
C.
Democritus
D.
Bohr
E.
Thomson
The scientist is E. Thomson .
Explanation:In the late nineteenth century, physicist J.J. Thomson started trying different things with cathode beam tubes. Cathode beam cylinders are fixed glass tubes from which the greater part of the air has been emptied. A high voltage is applied crosswise over two terminals toward one side of the cylinder, which makes a light emission stream from the cathode (the contrarily charged anode) to the anode (the emphatically charged cathode).
The cylinders are called cathode beam tubes on the grounds that the molecule bars or “cathode beam” begins at the cathode. The beam can be distinguished by painting a material known as phosphors onto the most distant finish of the cylinder past the anode. The phosphors sparkles, or produces light, when affected by the cathode beam.
How many moles of air molecules are contained in a 2.00 L flask at 98.8 kPa and 25.0 degrees of C show work plz
Answer:
7.97 x 10⁻² mol.
Explanation:
To calculate the no. of moles of a gas, we can use the general law of ideal gas: PV = nRT.where, P is the pressure of the gas in atm (P = 98.8 kPa = 0.975 atm).
V is the volume of the gas in L (V = 2.0 L).
n is the no. of moles of the gas in mol (??? mol).
R is the general gas constant (R = 0.0821 L.atm/mol.K).
T is the temperature of the gas in K (T = 25°C + 273 = 298 K).
∴ n = PV/RT = (0.975 atm)(2.0 L)/(0.0821 L.atm/mol.K)(298 K) = 7.97 x 10⁻² mol.
NEED ANS ASAP PLSSS HELP
if you supply 3600 kJ of heat, how many grams of ice at 0°C can be melted, heated to its boiling point? (Make M your X in equations) (figure out which q you need)!!
Answer:
17,140 g = 17.14 kg.
Explanation:
To solve this problem, we can use the relation:Q = m.c.ΔT,
where, Q is the amount of heat absorbed by ice (Q = 3600 x 10³ J).
m is the mass of the ice (m = ??? g).
c is the specific heat of the ice (c of ice = 2.1 J/g.°C).
ΔT is the difference between the initial and final temperature (ΔT = final T - initial T = 100.0°C - 0.0°C = 100.0°C).
∵ Q = m.c.ΔT
∴ (3600 x 10³ J) = m.(2.1 J/g.°C).(100.0°C)
∴ m = (3600 x 10³ J)/(2.1 J/g.°C).(100.0°C) = 17,140 g = 17.14 kg.
if i add 25 ml of water to 135 ml of a 0.25 M NaOH solution what will the molarity of the diluted solution be
Answer:
0.21 M. (2 sig. fig.)
Explanation:
The molarity of a solution is the number of moles of the solute in each liter of the solution. The unit for molarity is M. One M equals to one mole per liter.
How many moles of NaOH in the original solution?
[tex]n = c \cdot V[/tex],
where
[tex]n[/tex] is the number of moles of the solute in the solution.[tex]c[/tex] is the concentration of the solution. [tex]c = 0.25 \;\text{M} = 0.25\;\text{mol}\cdot\textbf{L}^{-1}[/tex] for the initial solution.[tex]V[/tex] is the volume of the solution. For the initial solution, [tex]V = 135\;\textbf{mL} = 0.135\;\textbf{L}[/tex] for the initial solution.[tex]n = c\cdot V = 0.25\;\text{mol}\cdot\textbf{L}^{-1} \times 0.135\;\textbf{L} = 0.03375\;\text{mol}[/tex].
What's the concentration of the diluted solution?
[tex]\displaystyle c = \frac{n}{V}[/tex].
[tex]n[/tex] is the number of solute in the solution. Diluting the solution does not influence the value of [tex]n[/tex]. [tex]n = 0.03375\;\text{mol}[/tex] for the diluted solution.Volume of the diluted solution: [tex]25\;\text{mL} + 135\;\text{mL} = 160\;\textbf{mL} = 0.160\;\textbf{L}[/tex].Concentration of the diluted solution:
[tex]\displaystyle c = \frac{n}{V} = \frac{0.03375\;\text{mol}}{0.160\;\textbf{L}} = 0.021\;\text{mol}\cdot\textbf{L}^{-1} = 0.021\;\text{M}[/tex].
The least significant number in the question comes with 2 sig. fig. Keep more sig. fig. than that in calculations but round the final result to 2 sig. fig. Hence the result: 0.021 M.
Answeri think 0.21 M
Explanation:
H2O2, hydrogen peroxide, naturally breaks down into H2O and O2 over time. MnO2, manganese dioxide, can be used to lower the energy of activation needed for this reaction to take place and, thus, increase the rate of reaction. What type of substance is MnO2 ?
a. a reactant
b. an inhibitor
c. an enhancer
d. a catalyst
Final answer:
MnO2 is a catalyst that increases the decomposition rate of H2O2 into H2O and O2 by lowering the reaction's activation energy and is not consumed in the process.
Explanation:
MnO2, manganese dioxide, serves as a catalyst in the decomposition of H2O2 into H2O and O2. A catalyst is a substance that increases the rate of a chemical reaction by lowering the activation energy needed for the reaction to proceed, without being consumed in the process. After the reaction, the catalyst returns to its initial state and can be used repeatedly. Therefore, the correct answer to the question concerning the role of MnO2 is (d) a catalyst.
5 drops of 0.15 M Ki added to
40 drops of Na2S2O3
What is the final concentration of ki?
Final answer:
To find the final concentration of KI after adding 5 drops of 0.15 M KI to 40 drops of Na2S2O3, assuming each drop is equal in volume, the total volume is calculated and used to compute the final concentration, which is approximately 0.0167 M.
Explanation:
The question asks for the final concentration of KI (potassium iodide) after 5 drops of 0.15 M KI solution are added to 40 drops of Na₂S₂O₃ solution. To find the final concentration, we need to consider the total volume and the initial amount of KI. Assuming each drop has the same volume, the initial volume of KI solution is 5 drops and the final volume after mixing is 45 drops.
Initial moles of KI = Concentration × Volume = 0.15 M × 5 drops
Assuming 1 drop = 0.05 mL for calculation purposes, then 5 drops = 0.25 mL (converted to liters = 0.00025 L)
Initial moles of KI = 0.15 M × 0.00025 L = 0.0000375 mol
To find the concentration of KI in the final solution:
Final concentration = initial moles ÷ final volume = 0.0000375 mol ÷ (5 drops + 40 drops)
Assuming the volume per drop is constant, the final volume = 45 × 0.05 mL = 2.25 mL = 0.00225 L
Final concentration = 0.0000375 mol ÷ 0.00225 L = 0.0167 M
Therefore, the final concentration of KI in the mixture is approximately 0.0167 M.