What is the volume of 0.200 mol of an ideal gas at 200 kPa and 400 K?A. 0.83 L
B. 3.33 L
C. 5.60 L
D. 20.8 L

Answers

Answer 1
Answer: The ideal gas under STP is 22.4 L/mol. While the gas has a rule of P1V1/T1=P2V2/T2. So the volume under 101 kPa and 273 K is 0.2*22.4=4.48 L. So under 200 kPa and 400 K is 3.33 L. So the answer is B.

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Answers

Explanation:

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How do lungfish survie in intense heat

Answers

I believe they use Estivation

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The radioisotope radon-222 has half-life of 3.8 days. how much of a 73.9-g sample of radon-222 would be left after approximately 23 days?

Answers

This can be solved by the equation: 

A = Aoe^(-ln2/t)T
where Ao is the initial amount of the substance ( 73.9-g sample of radon-222 ), t is the half-life time (3.8 days) and T is the time elapsed. Plugging in the values in the equation, the substance left is 1.11g. 

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Answers

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What is the molecular formula of caffeine, given that it has an empirical formula of C_4H_5N_2O and a molar mass of 194 g/mol?

Answers

Answer:

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In every balanced chemical equation each side of the equation has the same number of

Answers

In a balanced chemical equation each side has the same number of ATOMS of the reactants.

For example(This is random)

2C + 2O = 2C2O

I still have 2 Carbon and 2 Oxygen atoms after the reaction.