Question

Please please solve 13 question

Answer 1

a) it has higher density of 60% of dry air
b) by Linde's process ,Claude's process
c) because seems to be an ice when heated it directly become gas directly from liquid

Answer 2

Hello dear your answer is in down

13(a) a gas has no definite shape or volume of its own it acquires the shape of the container. intermolecular attraction is the weakest in gas where is intermolecular separation is the largest health molecules in a gas move very fast and the gas expands to fill at the space available.

(b) gases are liqliquefied on low temperature by applying heat pressure this process is called fractional distillation and the gases are first compressed into the temperature according to their melting point the mud liquefy.
example carbon dioxide gas and liquifies at -78°celcius

(c) solid CO2 is called dry ice because it looks like ice and it is cold as Ice but even mealts it does not becomes as a wet liquid but when ice melts its form liquid this is the reason that that's all that's CO2 is called dry ice.

hope it helps you a lot and please mark my answer as brainlist answer