N which phase(s) of matter are the atoms closely packed but still able to slide past each other?gas
liquid
solid and gas
liquid and solid
Answers
Answer:
Liquid
Explanation:
Please don't jugde me if I got it wrong
Answer:
I belive its liquid if I'm right because liquids are packed together when they take shape but they are still able to move.....brainliest???
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Answers
When you have a fever, the average kinetic energy of the water molecules in your body increases because the molecule's speed increases.
What is kinetic energy?
- In physics, kinetic energy is the energy that an object has as a result of motion. It is defined as the amount of effort required to move a mass-determined body from rest to the specified velocity.
- Unless the body's speedchanges, the kinetic energy gained during acceleration is retained.
- Kinetic energy is the energy that an object has as a result of motion. To accelerate an object, a force must be applied to it.
- We must exert effort in order to use force. When the work is completed, energy is transferred to the item, which moves at a new, constant speed.
To learn more kinetic energy, refer to:
#SPJ2
A. S.
B. N.
C. Sn.
D. Na.
Answers
Answers
Answers
B. attract
C. collect
D. produce
Answers
Chemb.01.08.3b
Chemb.01.08.3c******
Chemb.01.08.3d
4. What happens to the partial pressure of oxygen in a sample of air if the temperature is increased?
It increases.
It stays the same.
It decreases.
The change cannot be determined. ******
5. A breathing mixture used by deep-sea divers contains helium, oxygen, and carbon dioxide. What is the partial pressure of oxygen at 101.4 kPa if PHe = 82.5 kPa andChemb.01.08.06= 0.4 kPa?
82.9 kPa******
19.3 kPa
18.5 kPa
101.0 kPa
6. Which of the following gases is the best choice for inflating a balloon that must remain inflated for a long period of time?
argon
oxygen
hydrogen *****
neon
Answers
Correct Answer: The average kinetic energy of the gas decreases.
Reason:
From the ideal gas equation, we know that PV = nRT
where, P = pressure, V = volume, n = number of moles of gas, R = gas constant and T = temperature.
From above equation, it can be seen that, Temp. as a direct relation with Pressure and Volume. Hence, as temperature of the gas in a balloon decreases, pressure and volume also decreases.
Also, from kinetic theory of gases, we know that, kinetic energy of gas increases with increasing temp. Hence, average kinetic energy of the gas decreases with decreasing temp.
Answer 2:
Correct answer: Out
Reason:
From the ideal gas equation, we know that PV = nRT
where, P = pressure, V = volume, n = number of moles of gas, R = gas constant and T = temperature.
Therefore, when a sealed syringe is heated, it's temp. will increase. This, will result in expansion of gas i.e volume will increase. Hence, syringe plunger move in outwards direction.
Answer 3: Volume = 6046 L
Reason:
From the ideal gas equation, we know that PV = RT
where, P = pressure, V = volume, R = gas constant and T = temperature.
Given: P1 = 99 kPa, V1 = 3000 L, T1 = 312 K, P2 = 45.5 KPa and T2 = 289 K.
Therefore, we have:
Thus,
Hence, V2 = 6046 L
Answer 4:
Correct Answer: It increases
Reason:
We know that, pressure of gas, it directly proportional to temp. Hence, when the temp. of as is increases. Total pressure of gas mixture increases. This is because, partial pressure of individual component (in present case oxygen) increases.
Answer 5:
Correct answer: 18.5 kPa
Reason:
We know that, total pressure is the sum of the partial pressures of the gases present in it. Mathematically, it can be expressed as:
Ptot = PO2 + PHe + PCO2
Therefore, partial pressure of oxygen, PO2:
PO2 = Ptot − PHe − PCO2
= 101.4 − 82.5 − 0.4
=18.5 kPa.
Answer 6:
Correct Answer: Argon
Reason:
Inert gases are the best choice for inflating a balloon that must remain inflated for a long period of time. Among given options, both neon and argon are inert gas, But, atomic weight of Ar is 40g/mol, while is more than that of neon (20 g/mol). Hence,. Argon gas is preferred over neon gas.1. As the temperature of the gas in a balloon decreases, the average kinetic energy of the gas decreases.
2. The direction in which the syringe plunger would move is Out.
3. The volume of the balloon under these new conditions would be calculated using the following conversion factor ratios 6046 L.
4. It increases
5. 18.5 kPa
6. Argon
What is the average kinetic energy?
The average kinetic energy is the one and a half of the mass (m) of each gas molecule multiplied by the square of the RMS speed (vrms). There is a relationship between the pressure of a gaseous substance and the temperature of a gas.
Given the pressure of the gas in question 2, we can expect the direction in which the syringe plunger would move to be out.
Learn more about average kinetic energy here: