The temperature and volume in a closed container of gas remain constant. if the number of particles of gas is increased, what will happen to the gas pressure?
-it will increase
-it will decrease
-it will remain constant
-you cannot predict it

A - It will increase

Explanation:

Take for instance,

The number of particles (10000) present initially is less in a per unit volume say in 1 mL.

The number of particles increases (20000) in the same volume 1mL .

So, the pressure will increase in the container since 10000 particles is present in a low volume of 0.5 mL now.

We know as volume decreases the pressure will increase as per Boyle’s law.  

a. the law of proportion states the combination of 2 atoms in a specific ratio to produce multiple compounds such as the given statement of question ‘1st compound contains 88.8 % cu ’ indicates 88.8 g of cu is present along with 11.2 g oxygen in 100 g of compound whereas the statement ‘2st compound contains 79.9 % cu ’ indicates 79.9 g of cu is present along with 20.1 g oxygen in 100 g of compound

1st compound contains 88.8 g cu

for cu

m = 63 g /mol

atomic % = 88.8 /63 = 1.42

for o

m = 16 g /mol

atomic % = 11.2 /16 = 0.7

b. the emperical formula of 1st compound is

cu1.4o0.7

cu2o