Answer:
1. In the morning the molecules were moving away from each other with a smaller speed than when the truck was carrying the substance.
2. The reason is that the molecules contain less average kinetic energy, thus their average speed is lower.
Explanation:
Our model of the state (phases) of the substances describes the molecules of solids as not moving away from each other, they are relatively fixed with respect to each other, just vibrating; the molecules of liquids as free to slide pass each other, which permits they to flow, but not moving away from each other; and the the molecules of the gases as moving away from each other, which is the cause of them occupying the whole space of the container that holds them.
According to that, the substance that the truck was carryng was a gas, because the molecules were moving away from each other.
After parking overnight, where energy transferred out of the substance, in the morning, the substance was a gas. Hence, the molecules were moving away from each other too. This answer the first question.
Since energy was transferred out of the substance, in the morning the temperature of the substance decreased (but no enough to make it a liquid). The average kinetic energy of the gases depends only on the temperature. So, the average kinetic energy of the molecules in the morning was smaller than when the truck was carrying the substance. Since the kinetic energy is proportional to the square of the speed of the molecules, the smaller average kinetic energy means that the average speed of the molecules was smaller too. Hence, in the morning the molecules were moving away from each other with a lower speed than when the truck was carrying the substance.
Average kinetic energy is the average sum of all kinetic energy of all the molecules of gases. Therefore, molecules will move at a lesser speed as average kinetic energy will become small.
What is kinetic energy?It is a energy which is possess by a moving object. It is very difficult to find the correct value of kinetic energy so we find average kinetic energy. Which is very easy to calculate as compared to calculating kinetic energy. It is not dependent on the type of gases or mass of gases.
Mathematically, the formula for kinetic energy can be given as
K.E=1/2mv²
Where,
m= mass of object
v= velocity of object
Molecules will move at a lesser speed as average kinetic energy will become small.
Therefore, molecules will move at a lesser speed as average kinetic energy will become small.
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The answer is d but can anyone explain why and if not don't answer
Answer:
because the reaction can always be accelerated by heat
According to kinetic molecular theory, collisions between gas particles in a sample of an ideal gas 1. increase the energy content of the gas sample 2. produce strong attractive forces between the gas particles 3. result in a net loss of energy by the gas sample 4. transfer energy between the gas particles
Answer:
should you prove this or explain or pick the correct answer
According to the kinetic molecular theory, collisions between gas particles in a sample of an ideal gas: Transfer energy between the gas particles. Hence, option 4 is correct.
What is kinetic theory of gases ?According to kinetic theory of gases, when gas particles collide with each other, they transfer energy between themselves. Some collisions will result in the transfer of kinetic energy from one particle to another, while others may result in a transfer of potential energy due to the intermolecular forces between the particles.
However, the total energy of the gas particles is conserved during these collisions, so there is no net loss or gain of energy by the gas sample as a whole.
The kinetic molecular theory also states that ideal gas particles do not have any significant attractive or repulsive forces between them, so option 2 is incorrect.
Additionally, collisions between gas particles do not increase the energy content of the gas sample (option 1) or result in a net loss of energy by the gas sample (option 3).
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If 0.583 g of ammonia (NH3) is dissolved to make 250 mL of solution, what is the molarity?
Answer:
0.137 M NH3
Explanation:
First divide the mass of NH3 by the molar mass of NH3, and then divide by the volume to get molarity.
0.583 g / 17.031 g/mol = 0.0342 mol NH3
0.0342 mol NH3 / 0.250 L = 0.137 M NH3
What is the freezing point, in °C, of a solution made with 1.31 mol of CHCl₃ in 530.0 g of CCl₄?
Answer:
-96.6°C
Explanation:
Given:
moles CHCl3 = 1.31 molmass CCl4 = 530.0 gmass CCl4 = 530.0 g * (1 kg / 1000)
mass CCl4 = 0.5300 kg
First calculate the molality (m) of the solute, which is the moles of solute divided by the kg of solvent ([tex]\frac{moles}{kg}[/tex]):
molality CHCl3 = (mass moles CHCl3) / (mass CCl4 in kg)
molality CHCl3 = (1.31 mol) / (0.5300 kg)
molality CHCl3 = 2.471698m
Decrease in freezing point of solvent = (Kf) * (molality of solute)
Decrease in freezing point of CCl4 = (Kf) * (molality CHCl3)
Decrease in freezing point of CCl4 = (29.8°C/m) * (2.47m)
Decrease in freezing point of CCl4 = 73.6566°C
Then use the molality of the solute to calculate the change in freezing point and subtract the change from the original freezing point.
Freezing point of solution =
(freezing point of pure solvent) - (Decrease in freezing point)
Freezing point of solution = (-22.9°C) - (73.66°C)
Freezing point of solution = -96.6°C
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Rubidium Rb
when was the element discovered and by whom ??? ASAP MAKE IT AT LEAST A PARAGRAPH!!!
Answer:
Rubidium Rb was discovered in 1861It was discovered by the German chemist Robert Wilhelm Bunsen and the German physicist Gustav-Robert KirchoffExplanation:
Rubidium was discovered by the German chemists Robert Bunsen and Gustav Kirchhoff in 1861 while analyzing samples of the mineral lepidolite with a device called a spectroscope. The sample produced a set of deep red spectral lines they had never seen before. Bunsen was eventually able to isolate samples of rubidium metal. Today, most rubidium is obtained as a byproduct of refining lithium.
Use the balanced equation from #13 to answer the following:
Calculate how many moles of SO2 can be produced with when given 75 grams of CS2.
Now calculate how many moles of SO2 can be produced with when given 96 grams of O2.
Which one is the limiting reactant (75 grams of CS2 or 96 grams of O2)? How do you know?
Answer:
1. 9600 moles
2. 4096 moles
Explanation:
CS2 + 3 O2=> CO2 + 2 SO2
1. The ratio for CS2: SO2 is :
1:2
If there are 75g of CS2 then there are:
75 × 2= 150g of SO2
Moles = mass × Mr
Moles = 150 × 64
Moles = 9600
2. The ratio for O2 : SO2 is:
3:2
If there are 96g of O2 then there are:
96 × 2/3 = 64g of SO2
moles = mass × Mr
Moles = 64 × 64
Moles = 4096
Answer: The FitnessGram PACER Test is a multistage aerobic capacity test that progressively gets more difficult as it continues. The test is used to measure a student's aerobic capacity as part of the FitnessGram assessment. Students run back and forth as many times as they can, each lap signaled by a beep sound.
Explanation:
what type of cells are these?
(Plant or animal)
Answer:
5 is an animal cell, 6 is a plant cell
Explanation:
hope this helps!
______ is the tendency of an organism to maintain a constant and stable internal environment
Answer:
Homeostasis is the answer
Explanation: it maintains a constant and stable environment
The process of heating oil to separate out its various components is called __
a. hydraulic fracturing
b. peak production
c. refining
d. decommissioning
e. enrichment
The answer is refining which is c
Why do you think the same color M&M was used in each sample of water?
Answer:
The candy coating is made up of coloring and sugar. The coloring and the sugar molecules both have positive and negative charges on them. The water molecule has positive and negative charges so it can attract and dissolve the color and sugar pretty well.
Explanation:
go to https://www.acs.org/content/acs/en/education/whatischemistry/adventures-in-chemistry/experiments/dissolving-m-ms.html#:~:text=The%20candy%20coating%20is%20made,color%20and%20sugar%20pretty%20well.
Nuclear power:
accounts for half of the energy used in the U.S.
creates less energy than fossil fuels
is a nonrenewable resource
is a renewable resource
Answer:
Is a nonrenewable resource
Explanation:
"The fuel for fusion reactors can be drawn from sea water in an almost unlimited supply. The fuel for fission, on the other hand, comes from a limited supply of uranium. Once it is depleted, it cannot be easily replenished. For this reason, nuclear power is considered a nonrenewable resource."
I got this source from ODY
Hope I could help! :)
Have a nice day
Answer:
is a nonrenewable resource
Explanation:
correctly label the picture with the correct phase
Answer:
solid goes on the first on and liquid goes on the sceond one
WHAT INVESTMENT OF A $125 WOULD HAVE THE MOST LASTING VALUE FOR YOUR FUTURE?
A pair of jordans
Some nice cologne or perfume
3 college credits at MCC BAG
a dinner with 2 or 3 people
Answer:
a pair of jordans
Explanation:
How will popcorn protect a egg by reducing the force of impact on the egg? How does it work?
Answer:
The popcorn will take less impact because the force goes into the popcorn serving as a cushion for the egg. The egg will take less damage because the force will cancel out.
Explanation:
Baby Mice
Seif's pet mouse had babies. Five of the babies were black and two were white. The
father mouse was black. The mother mouse was white. Seif and his friends wondered
why the mice were different colors. These were their ideas
Jerome: Baby mice inherit more traits from their fathers than their mothers
Alexa: The baby mice got half their traits from their father and half from their mother.
Juner Male traies are stronger than female traits.
Seif Rack mke have more traies than white mice.
Fiona: The black baby mice are probably make and the white baby mice are probably
female
India, Paver in die for colo don't matter what whine will
Consider Seif and his friends responses/ideas. Answer the
following questions:
1. Which friend has the correct answer about how traits are inherited in this method of reproduction?
2. Is this type of reproduction asexual or sexual? How do you know? (use details from the texti
Answer:
I would say for #1 Fiona and for #2 sexual
Explanation:
Please give brailiest
Stronger acids are those that -
O more completely inhibit polarity in water
O exhibit hydrogen bonding
O hold on to their protons more strongly
O lose their protons more easily
What causes thermal pollution in rivers?
1. automobile exhaust
2. nuclear power plants
3. solar radiation
4. factory smokestacks
Answer:
nuclear power plants .....
NO LINKS07.02 LC)
What happens when a particle and its antiparticle collide? (2 points)
O They combine nuclei
O They break into quarks
They are converted to energy
O They become antimatter
When a particle and its antiparticle collide they are converted to energy.
What is collide?A colloid would be a mixture in which a component made up of insoluble particles that are scattered at a microscopic scale is suspended within another component.
What is energy?In order to accomplish work and to produce heat as well as light, energy must be supplied to a body or even to a physical system. Energy would be the quantitative attribute that does this. Energy would be transformed in form but cannot be created and destroyed, according to the rule of conservation of energy.
Annihilation occurs when a particle collides including its anti-particle. The particle and its antiparticle's whole mass are transformed back into energy to produce two gamma-ray photons. You won't find antiparticles in everyday stuff since they typically barely last for a tiny amount of time until annihilation takes place.
Therefore, the correct answer will be option (c).
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how do you determine the total mechanical energy stored of an object
Which unit is commonly used for measuring pressure?
O m3
O bar
O N/m3
O Celsius
Answer:
3
Explanation:
Answer:
bar
Explanation:
yes
Select whether the statement is for Speed, Velocity, or Acceleration.
The earth travels at 30 kilometers per second.
Velocity
Speed
Acceleration
Answer:
I think that the statement is relative to speed because it is saying km per second.
Answer:
Speed
Explanation:
What’s the easiest way to add energy to matter
Answer:
The easiest way is to heat matter which raises its internal energy andso the mass as well. Another possibility is to accelerate matter as in case of protons or heavy ions in the LHC, Protons ,for example , are accelerated to the energies of 6500 GeV which means increase of the rest mass by a factor of almost 7000
A sample of a gas in a balloon has a volume of 4.20 L and temperature of 48.2 °C. Calculate the volume when
the temperature is lowered to 15.4°C at constant pressure.
a. 3.77
b. 4.20
c. 1.34
d. 13.15
e. 4.68
Answer:
V1/T1=V2/T2
4.20L/321.2K=x/288.4K
multiply both side by 288.4
1211.28/321.2=x
x=3.77L
Option 3 13.15 is the correct answer.
What is Charles law?Charles's law exists as an experimental gas law that explains how gases tend to expand when heated. A modern statement of Charles's law exists: When the pressure on a sample of a dry gas exists held constant, the Kelvin temperature and the volume will be in direct proportion.
According to Charles law
The volume occupied by a fixed amount of gas is directly proportional to its absolute temperature, if the pressure remains constant.
[tex]V1/T1=V2/T2[/tex]
Where,
[tex]V1[/tex]= first volume
[tex]V{2}[/tex] = second volume
[tex]T{1}[/tex] = first temperature
[tex]T{2}[/tex]= second temperature
Here, at constant pressure,
[tex]V1/T1=V2/T2[/tex]
[tex]V1[/tex]=4.20 L
[tex]V2[/tex]= x
[tex]T1[/tex]=321.2 K
[tex]T2[/tex]=288.4 K
Therefore, [tex]V1/T1=V2/T2[/tex]
4.20L/321.2K=x/288.4K
1211.28/321.2=x
x=3.77L
Thus option a is correct.
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What type of substances can we separate using electrolyisis and why?
Answer:
ionic substances because they contain charged particles
How do plants and animals rely on each other?
Answer:
b
Explanation:
Help! Is there a way to email outlook support for help? If so please comment their email address, as I can't call them on their hotline right now.
Thank you, so much in advance! :)
Answer:
Explanation:
Even if you have a Hotmail email address, you now use the Outlook.com interface to ... I searched and found a Hotmail support number, but is it legit? ... one from Leo's e-mail, I receive a message from windows stating it can't find the site.
if an EXOTHERMIC reaction takes place in a container, the container will feel
a. hotter
b.colder
c. neither hotter nor colder
zinc, sulphur, oxygen
What would this compound be called?
Zinc sulphate
Zinc sulphateZnSO₄
This is the answer.
Captain uses a steering wheel called him to turn the rudder A sailing ship do you think it would be easier for him to turn a large wheel or a small wheel explain why you think so
Answer:
Large wheel.
Explanation:
It would be easier for the captain to turn a large wheel as compared to a small wheel because less amount of effort is needed by the captain to turn the rudder. If a steering wheel is small, more effort and force is required to turn it while on the other hand, if the steering wheel is large, small effort is needed to turn the rudder. The large size of a sailing boat's steering wheel can help the captain to have more control over the boat as compared to small steering wheel and he is able to access it from either side of the boat.
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Which properties are characteristic of true solutions? (Select all that apply.)
The light beam is unaffected.
The particles are larger than 10 -8 cm.
The particles are dissolved.
The particles are suspended indefinitely.
Answer:
The correct answer is the last option
Explanation:
