Answer:
B
Explanation:
it depends if the weather was cold but ummm they warm and cold air would mix and turn story and watch out tornadoes could also happen
Answer:
Stormy
Explanation:
Apex
Assessment timer and count
Assessment items
Item 5
What is the stimulus shown in the photographs?
Two images, one showing an open Venus flytrap and the other showing Venus flytrap with an insect captured in its jaws
the plant growing toward the light
the trap closing over the insect
the insect touching the trigger hairs
light coming from a single direction
Answer:
The answer is: "the insect touching the trigger hairs"
Explanation:
I took the k-12 test and got a 100%!
How many molecules of PF5 are found in 39.5 grams of PF5?
Answer:
[tex]1.9 \times 10^{23} molecules[/tex] of [tex]PF_5[/tex] are found in 39.5 grams of [tex]PF_5[/tex].
Explanation:
Atomic weights : P= 31, F= 19,
molar mass of = 1 atomic weight of P+ 5 atomic weight of
F= 31+5 [tex]\times[/tex] 19
= 31+95
=126 g/mole
moles in 39.5 gm of
= [tex]\frac{Mass}{Molar mass}[/tex]
= [tex]\frac{39.5}{126}moles[/tex]
=0.3134 moles
1 mole of any substance contains
0.3131 moles contains 0.3134
[tex]= 1.9 \times 10^{23} molecules[/tex]
Therefore, [tex]1.9 \times 10^{23} molecules[/tex] of [tex]PF_5[/tex] are found in 39.5 grams of [tex]PF_5[/tex].
In 39.5 grams of PF5, there are approximately 1.86 x 10^23 molecules. This is calculated by first finding the number of moles of PF5 in 39.5 grams, and then multiplying this by Avogadro's number.
Explanation:To calculate the number of molecules in a specified mass of a compound, you have to first calculate the molar mass of the compound. In this case, the molar mass of PF5 (Phosphorus pentafluoride) is approximately 127.96 g/mol. So in 39.5 grams of PF5, there are 39.5g / 127.96 g/mol = 0.309 moles of PF5.
Avogadro's number, which is 6.022 x 10^23, tells us the number of particles (atoms, molecules, ions etc) in one mole of a substance. Therefore, to find the number of molecules in 0.309 moles of PF5, we multiply 0.309 moles by Avogadro's number.
This gives us a final answer of approximately 1.86 x 10^23 molecules of PF5 in 39.5g of PF5.
Learn more about Mole concept here:https://brainly.com/question/20483253
#SPJ3
2. What is the frequency of a 6.9 x 10-13 m wave?
.
co
The frequency of the wave at the given wavelength is [tex]4.35 \times 10^{20} \ Hz[/tex].
The given parameters;
wavelength of the wave, λ = 6.9 x 10⁻¹³ mThe frequency of the wave is calculated by applying wave equation as shown below;
v = fλ
where;
f is the frequency of the wavev is the speed of lightThe frequency of the wave is calculated as follows;
[tex]f = \frac{v}{\lambda} \\\\f = \frac{3\times 10^8}{6.9 \times 10^{-13}} \\\\f = 4.35 \times 10^{20} \ Hz[/tex]
Thus, the frequency of the wave at the given wavelength is [tex]4.35 \times 10^{20} \ Hz[/tex]
Learn more here:https://brainly.com/question/18477700
To find the frequency of a wave, you divide the speed of light by the wavelength. Using these facts, the frequency of a 6.9 x 10-13 m wave is approximately 4.3 x 1020 Hz.
Explanation:The frequency of a wave can be calculated with the following equation: frequency (f) = speed of light (c)/wavelength (λ). The wavelength is provided (6.9 x 10-13 m), and we know the speed of light is approximately 3.00 x 108 m/s. Using these values, the frequency calculations would look like:
f = c/λ
= 3.00 x 108 m/s / 6.9 x 10-13 m
≈ 4.3 x 1020 Hz
So, the frequency of a 6.9 x 10-13 m wave is approximately 4.3 x 1020 Hz.
Learn more about Wave Frequency here:https://brainly.com/question/3795295
#SPJ3
Which situation is an indication that a chemical change has occurred?
A.No heat is released.
B.A gas is formed.
C.No color change occurs.
D.The temperature does not change.
Answer:
A. Heat is Released.
(Both physical and chemical changes can tamper with temperature, but to identify a CHEMICAL change - you'll notice a color change, heat being released, odor and/or bubbling.)
The only thing listed applicable is Heat is Released.
Explanation:
Answer:
B. A gas is formed
Ik I'm late sorry
Explanation:
I did the test :P
UCULO
2 Points
Which of the following is a cost of urban development?
O
A. Loss of agricultural land
O
B. Employment
O
C. Efficient distribution of goods
O
D. Entertainment
Answer:
A. Loss of agricultural land
Explanation:
Urban development pretty much encourages the other three answers' development
Answer: it would A the loss of agriculture land
Convert 4.2 moles of C2H6 gas to volume at STP
Which element has the smallest radius? a. fluorine b. iodine c. chlorine d. bromine
Answer: chlorine
Explanation:
its the most up and right on the periodic table
Fluorine (F) has the smallest atomic radius among the options given, as its higher effective nuclear charge and position in the periodic table leads to a stronger attraction of electrons to the nucleus.
Explanation:To determine which element has the smallest atomic radius among fluorine (F), iodine (I), chlorine (Cl), and bromine (Br), we should look at their positions on the periodic table. Atomic radii decrease across a period from left to right due to the increase in the number of protons in the nucleus, which attracts the electron cloud more strongly. Also, atomic radii increase as we move down a group because additional electron shells are added which are farther from the nucleus.
Given this information, among the elements listed, fluorine (F) has the smallest atomic radius because it is higher up and farther to the right on the periodic table as compared to the other halogens (Cl, Br, and I). This placement indicates that fluorine has a greater effective nuclear charge (denoted as 'valence Z*'), which results in a stronger attraction of valence electrons to the nucleus, leading to the smaller atomic radius mentioned in Answer 6.
As an example, which is provided in the reference information under 'Check Your Learning,' an atom smaller than fluorine (F) could be helium (He), which has fewer electron shells and is also to the right of fluorine in the periodic table, within the noble gases.
What is the speed of a rocket that travels 9000 meters in 12.12 seconds
What are the products of the
alkali metals in a reaction with:
oxygen, water, halogen?
Answer:
Using The element calcium Ca, we have
CaO
CaOH
CaCl
Explanation:
Answer:
Using magnesium, Mg
you get;
MgO,
MgOH
MgFl
If a weather map has a symbol that shows a circle with an H in the middle, what is it
referring to?
A.) high pressure
B.) high weather
C.) high temperature
D.) humid weather
Answer:
high pressure
Explanation:
Ethanol (C2H5OH) is produced from the fermentation of sucrose in the presence of enzymes.
C12H22O11(aq) + H2O(g) 4 C2H5OH(l) + 4 CO2(g)
Determine the theoretical yield and the percent yields of ethanol if 735 g sucrose undergoes fermentation and 310.5 g ethanol is obtained.
theoretical
g
percent
%
Explanation:
to calculate theoratical yield...first we must calculate how much Sucrose moles we have..in order to to do so...we must calculate molar mass of sucrose.
molar mass of sucrose is 342.3 g/mol.
now we can calculate how many sucrose moles we have by dividing the mass with molar mass of sucrose
735g/(342.3g/mol)=2.147mol
theoratically...according to stoichiometry..every 1 mole of sucrose yields 4 moles of ethanol...so...
2.147mole yield 2.147*4mol=8.588mol
now we must calculate weight of that much ethanol..molar mass of ethanol is 46.07 g/mol...
so we can multiple moles by molar mass to obtain the weight 8.588mol*46.07g/mol=395.649g
but we only obtained 310.5g...so percentage we have is
[tex] \frac{310.5}{395.649} \times 100[/tex]
78.47%
if there is trouble with molar mases I used....use what you calculated...
If my explanation is good enough...please mark it as brainliest.thanks
mercury has a density of 13.6g/mol what volume of mercury must be taken to obtain 225g of the metal
To obtain 225g of mercury, approximately 16.54 mol of the metal must be taken.
Explanation:To find the volume of mercury needed to obtain 225g of the metal, we can use the formula:
Density = Mass / Volume
Rearranging the formula to solve for Volume, we get:
Volume = Mass / Density
Plugging in the values given, we have:
Volume = 225g / 13.6g/mol = 16.54 mol
To obtain 225g of mercury, we would need a volume of approximately 16.54 mol.
Learn more about Volume calculation here:https://brainly.com/question/32822827
#SPJ11
give three examples of methods of measuring the amount of something and give an example of how one of these quantities can be converted to another type of quantity
To measure the amount of something we can:
Measure its massMeasure its volumeMeasure its number of molesWhy?
Those are the three ways of measuring the amount of substance. Mass is measured in grams (g) and can be measured using a balance, the volume is measured in liters (L) and can be measured using a graduated cylinder. Moles are often determined indirectly through titration or weighing.
To convert one quantity into another we often use conversion factors. To interconvert between mass and volume we use the density.
Density is defined as the amount of mass in a given volume of the substance. If we had a sample of 1000 mL of ethanol, and we wanted to find its mass, we'd have to apply the following conversion factor, knowing that the density of ethanol is 0.789 g/mL:
[tex]1000mLEtOH*\frac{0.789g}{1mL}=789 g[/tex]
Have a nice day!
#LearnwithBrainly
Physical quantities can be measured in various ways, such as using a meter stick for distance, a scale for weight, or a graduated cylinder for volume. Converting these quantities involves the process of Dimensional Analysis or Unit Conversion, which uses conversion factors to change from one type of unit to another. For example, kilometers can be converted to miles, and pounds can be converted to kilograms using known conversion ratios.
Explanation:There are numerous methods for measuring the amounts of different quantities. A few examples include measuring distance with a meter stick, weight using a scale, and volume using a graduated cylinder. Regarding conversions, quantities expressed in one unit can often be converted into a different unit. For example, we can measure the distance in kilometers and then convert it into miles using the conversion factor 0.621371miles/kilometer.
A common method used to convert between units is known as Dimensional Analysis or Unit Conversion. This involves using conversion ratios (also known as conversion factors) which represent relationships between different units of measure. These ratios are used to cancel out unwanted units and introduce desired ones. Take the example of converting kilometers to miles. We have the conversion ratio of 1 kilometer being approximately equal to 0.621371 miles, which becomes our conversion factor. If we have a given distance of 50 kilometers that we want to express in miles, we'd calculate 50km * 0.621371 miles/kilometer = ~31.07 miles.
Another example involves weight measurements. Often, these will be done in pounds but can be converted to kilograms using the conversion factor 1 pound is approximately equivalent to 0.453592 kilograms. Therefore, the weight of an object weighing 50 pounds would be converted as follows: 50 lbs * 0.453592 kg/pound = ~22.68 kilograms.
Learn more about Unit Conversion here:https://brainly.com/question/19420601
#SPJ3
Is an aqueous solution of NaHSO4 acidic,basic, or neutral
An aqueous solution of NaHSO4 is acidic due to the bisulfate anion's ability to release an extra hydrogen ion into the solution, resulting in increased acidity.
Explanation:An aqueous solution of NaHSO4 (sodium hydrogen sulfate) is generally acidic. This is because the NaHSO4 is a salt formed from a strong acid (H2SO4 - sulfuric acid) and a weak base. The bisulfate anion (HSO4-) can release an extra hydrogen ion (H+) into the solution, increasing the acidity. Considering the acidity of H2SO4 and the neutral nature of NaOH, NaHSO4 in water partially dissociates into Na+ and HSO4-. The Na+ does not affect the pH, but HSO4- can donate a proton (H+) to water to form H3O+ (hydronium ions) and SO4^2- (sulfate ions), making the solution acidic.
When a person holds an object, it has potential energy. How will the potential energy change if the person lifts the object above his or her head?
A.The object's potential energy will be zero.
B.The object's potential energy will be the same.
C.The object's potential energy will be less.
D.The object's potential energy will be greater.
Answer:D. The objects potential energy will be greater.
Explanation:
Potential energy is expressed in
PE = mgh
Where PE is the product of mass of the object, g which is acceleration to gravity and height.
PE and height is directly proportional which means that any changes in height will change the value of the PE. Increase in height means increase in PE.
Answer:
D.The object's potential energy will be greater.
Explanation:
the higher the object is the more potential energy it will have.
please help
Unsaturated fats are comprised of lipids that contain ____.
nitrogen
many hydrogen atoms
relatively few hydrogen atoms
no double bonds
Unsaturated fats are comprised of lipids with one or more double bonds between carbon atoms, resulting in relatively few hydrogen atoms than saturated fats. Option C is correct.
Unsaturated fats are comprised of lipids that contain relatively few hydrogen atoms. This is because they include one or more carbon-carbon double bonds in their fatty acid chains.
In contrast to saturated fats, which have no double bonds and contain the maximum number of hydrogen atoms, unsaturated fatty acids are not saturated with hydrogen due to these double bonds. Examples of unsaturated fats include monounsaturated fats with one double bond, and polyunsaturated fats with multiple double bonds.
Hence, C. is the correct option.
The complete question is:
Unsaturated fats are comprised of lipids that contain ____.
A) nitrogen
B) many hydrogen atoms
C) relatively few hydrogen atoms
D) no double bonds
2. Vanadium (V) Oxide equation
Answer:1. Or A
Explanation: I know this is right
Answer: V2O5
Explanation:
If the atomic weight of nitrogen is 14.0, what is the mass of one mole of nitrogen gas (N2)?
Answer:
14 grammes
Explanation:
if atomic weight of Nitrogen = 14 g/mole
mole =mass(g) / atomic weight(g/mole)
mass = 1moles x 14(g/mole)
mass = 14 grammes of Nitrogen
Answer:
28.0.
Explanation:
Hello,
In this case, it seen that 1 only nitrogen weights 14.0 g/mol, in such a way, for diatomic nitrogen which is the most stable form of pure nitrogen has two nitrogens thereby the mass of one mole of nitrogen gas is 28.0g/mol because the aforementioned 14.0g/mol is multiplied by 2 accounting the two nitrogens.
Best regards.
How many electrons are depicted in the electron dot diagram of an electrically
neutral carbon atom?
O two
four
O six
eight
Answer:
Four
Explanation:
The electron dot diagram of elements or ions depict only the valence electrons. Carbon has atomic number of 6. The first shell has 2 electrons and gets filled. The second shell is filled by the remaining four electrons.The 4 electrons of the valence shell is shown in the electron dot diagram.
Which of these would help maintain homeostasis during exercise?
increasing the amount of water excreted from the kidneys
developing goose bumps on the skin
speeding up the rate of breathing
decreasing the heart rate
Answer:
speeding up the rate of breathing
Explanation:
Answer:
speeding up the rate of breathing
Explanation:
Wetlands are important ecosystems for many reasons. Select all that apply.
Question 10 options:
They help prevent flooding.
They filter excess nutrients, sediment, and even pollution from the water that flows through them.
They are a rich habitat for many plant and animal species.
They help increase the rate of extinction of mammals by creating a loss of habitat.
Answer:
They help prevent flooding.
They filter excess nutrients, sediment, and even pollution from the water that flows through them.
They are a rich habitat for many plant and animal species.
Explanation:
Wetlands are a unique ecosystem that serves as a rich habitat for many plant and animal species. It is an area of soil that is covered by water. These can be found anywhere in the world. Many of the animals such as mammals, fish and birds need wetlands for their growth. It also provides an ecosystem capable for growing plants, crops and the like. Thus, they are a rich habitat for many plants and animals.
Wetlands also filter excess nutrients, sediment and even pollution from the water that flows through them. This allows the purification of surface water. The nutrients are taken up by plants and other microorganisms while the sediments settle at the bottom.
Wetlands help prevent flooding by absorbing much of the water during storms. Their function is similar to that of a sponge whereby they can hold as much water as possible. This is the reason why the government is aiming to preserve such distinct ecosystems.
What is Mar’s thin atmosphere mostly made of?
Answer:
carbon dioxide
Explanation:
Final answer:
Mars's atmosphere is mainly made up of carbon dioxide (95%) with small amounts of nitrogen (3%) and argon (2%). Its thin atmosphere resembles the conditions found high in Earth's atmosphere and is only 0.007 bar in surface pressure, which contributes to the planet's dry and dusty landscape.
Explanation:
The thin atmosphere of Mars is primarily composed of carbon dioxide (CO2), which makes up about 95% of its atmospheric content. In addition to CO2, the martian atmosphere contains roughly 3% nitrogen and 2% argon. Mars's air is so rarefied that it resembles the conditions found at an altitude of around 30 kilometers above Earth's surface. The planet's low atmospheric pressure prevents the existence of liquid water on its surface, as well as making winds less forceful despite their high speeds. Nevertheless, these winds are able to carry fine dust particles across the planet, creating the characteristic red hue that covers Mars's landscape and occasionally causing massive dust storms.
While Mars currently has a very thin atmosphere, it likely had a much thicker atmosphere in the past which could have supported liquid water and potentially conditions suitable for life. Any existing life on Mars today might be found in protected environments below the surface, where conditions could still support it.
Use the drop down menus to answer the questions,
In what type of plate boundary did subduction occur? Convergent boundary
In what type of plate boundary did new crust form? Convergent boundary
In what type of plate boundary did mountains form? Convergent boundary v
In what type of plate boundary did volcanoes form?
In what type of plate boundary did a river change its path?
Answer:
1, convergent boundary
2,divergent boundary
3, convergent boundary
4, convergent boundary
5,transform boundary
Explanation:
Convergent boundaries where two plates are colliding with each other.
What is Convergent and divergent boundaries?
Convergent boundaries where two plates are colliding. At subduction zones, the denser plate is subducted underneath the less dense plate. The plate being forced under is melted.
When two plates are moving away from each other, it is known as divergent plate boundary. Most divergent plate boundaries are formed underwater and formed oceanic spreading ridges.
Mountains are formed at convergent plate boundaries. At convergent boundary at which two plates are moving towards one another.
Destructive or convergent plate boundaries at which the tectonic plates are moving towards each other. Volcanoes form at convergent plate boundaries.
When plates move apart from each other at divergent boundaries, magma from the mantle reaches to the surface of Earth and new crust forms. When plates move toward each other at convergent boundaries, volcanoes, mountains, and trenches formed.
Learn more about subduction here: https://brainly.com/question/1358208
a car can accelerate from a standstill to 100 km/h [E] in 9.60s. calculate the average acceleration
Answer:
Acceleration is :
a = 2.89 m/s2
Explanation:
Acceleration : It is the change in the velocity of the object per unit time.
The object starts from the rest , so the initial velocity of the object is zero.
Initial velocity , u = 0
Final velocity = 100 km/h
Change the velocity to m/s because[ time unit is in second(9.60 s)]
1 km = 1000 m
1 hour = 60 x 60 sec = 3600 sec
[tex]1km/h=\frac{1000}{3600}m/s[/tex]
[tex]1km/hr=\frac{5}{18}[/tex]
[tex]100km/hr=\frac{5}{18}\times 100[/tex]
[tex]v=\frac{5}{18}\times 100[/tex]
v = 27.78 m/s
u = 0 m/s
time = 9.60 s
The acceleration"a" is calculated using :
[tex]a=\frac{v-u}{t}[/tex]
[tex]a=\frac{27.78-0}{9.6}[/tex]
[tex]a=\frac{27.78}{9.6}[/tex]
[tex]a=2.89m/s^{2}[/tex]
What is the atmospheres in order from earth
Answer:
Earth's atmosphere is divided into five main layers: the exosphere, the thermosphere, the mesosphere, the stratosphere and the troposphere.
Explanation:
The Earth's atmosphere consists of five main layers: troposphere, stratosphere, mesosphere, thermosphere, and exosphere. Each layer has different characteristics and functions.
Explanation:The Earth's atmosphere is divided into five main layers: the troposphere, stratosphere, mesosphere, thermosphere, and exosphere. These layers differ in temperature, composition, and altitude. The troposphere is the layer closest to the Earth's surface, followed by the stratosphere, mesosphere, thermosphere, and finally the exosphere. Each layer plays a crucial role in regulating the Earth's climate and protecting us from harmful solar radiation.
Learn more about Earth's Atmosphere here:https://brainly.com/question/18153601
#SPJ2
wyatt solved the following equation: x+1/2(6x-4)=6 which of the following has all correct justifications wyatt used to siove this equation
Explanation of how Wyatt solved the equation x + 1/2(6x - 4) = 6 and verified the solutions.
Wyatt solved the equation x + 1/2(6x - 4) = 6 by simplifying and solving for x, resulting in x = 3, x = -7. To verify the solutions, each value was substituted back into the original equation to ensure they satisfy the equation, leading to an identity.
What is the molar mass of ammonium hydroxide? Question 10 options: 32 g/mol none of these 35 g/mol 77 g/mol
Explanation:
Molecular formula
It is the representation of molecule in terms of symbols ,states ,moles etc
. The empirical formula represents the simplest whole-integer ratio of atoms in a compound.
Molecular mass
It is the mass of any molecule .
It is also called as molar mass .
Gram molecular mass
The molecular mass represented in grams becomes : gram molecular mass .
Let us calculate the mass of ammonium hydroxide
It molecular formula is : NH₄OH
The atomic masses of Nitrogen =14 ,hydrogen =1 ,Oxygen is 16.
So, the molar mass is : 14 + 1 x 4 +16 +1 =14+4+16+1=35g
8) What would the formula of di-iodine pentasulfide be?
The formula for di-iodine pentasulfide would be I2S5.
Two (di) molecules of iodine, paired with five (penta) molecules of sulfur.
Ten years ago, the ratio of birds to snakes in a local desert ecosystem was 2:5. Over the last 10 years, disease and hunting by humans has cut the bird population in half. The snake population has not changed. What is the current ratio of birds to snakes in this local ecosystem?
A.
2:2.5
B.
2:5
C.
1:5
D.
1:2
The current ratio of birds to snakes in the local desert ecosystem is 1:5, after the bird population decreased by half in the last 10 years. Hence, option C 1:5.
The original ratio of birds to snakes was 2:5. Since the bird population has halved while the snake population has remained the same, the current ratio of birds to snakes in the ecosystem is 1:5.
as the difference in electronegativity between two atoms decreases, the tendency for the formation of covalent bonds
Answer:
As the difference in electronegativity between two atoms decreases, the tendency for the formation of covalent bonds "increases"
Explanation:
Electronegativity being a chemical property which tells us about the tendency about the atom in order to fascinate the shared pair of the electron towards itself. It is being pretentious by atomic number and the distance as well, by the help of which the valence electrons resides from the charged nucleus. In the scale Pauling scale is used. Being the most electronegative element fluorine is counted. The more the electronegativity, the more electrons will fascinate towards itself.