A gas occupies 20 liters at a pressure of 40.0 mm hg. What is the volume when the pressure is increased to 80.0 mm hg?

Explanation:

The new volume can be found by using the formula for Boyle's law which is

From the question we have

From the question we have

We have the final answer as

hope this helps you

i think it's c. if you look search electronic symbol on google and then click on wiki it shows you a

atomic mass = 39

number of neutrons = 20

number of protons= 19

electronic configuration = 1s2 2s2 2p6 3s2 3p6 4s1

the number of electron in first shell = 2

number of electrons in n=3 shell = 8