Question

Gases can be liquified by

(a) increasing pressure

(b) decreasing temperature

(c) both (a) and (b)

(d) decreasing pressure​

Answer 1

Answer:

In general, gases can be liquefied by one of three general methods: (1) by compressing the gas at temperatures less than its critical temperature; (2) by making the gas do some kind of work against an external force, causing the gas to lose energy and change to the liquid state; and (3) by making gas do work against ...

Answer 2

Answer:

c both a and b(•‿•)....