i dont understand these 4 questions 16. Under which conditions will a gas behave

Question

i dont understand these 4 questions

16. Under which conditions will a gas behave most ideally? (A) low P and high T (B) low P and low T (C) high P and low T 17. The mass of 560 cm3 of a gas at 0 "Cand 1 atm is 1.60 g. Which gas could it be? (D) Cl (C) so (B) CO (A) O 18. oxygen, which is 16 times as dense as hydrogen, diffuses (A) 1/16 times as fast. (B) 1/4 times as fast. (C) 4 times as fast. 19. How is the vapor pressure of a liquid in a closed container affected when the quantity of liquid is doubled at constant temperature? (A) The vapor pressure increases. (B) The vapor pressure decreases. (C) The vapor pressure stays the same. (D) The vapor pressure may increase or decrease, depending on the liquid.

Explanation / Answer

16.

option A is correct answer

in general at Low pressure and higher temperature gas behvae like a ideal gas

in order to act as a ideal gase

intermolecular forces should be much lower than kinitic energy of the gaes

taht is possible at very low pressure and higher T

at low pressure molecules are as far as possible

at high temperature kinitic energy of the molecule is higher

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