What is the mass of 0.100 mole of neon? (Watch sf’s)
A. 2.018 g
B. 2 g
C. 20.18 g
D. 2.02 g

2.018 is wrong btw

The answer to your question is letter D. 2.02 g

Explanation:

Data

moles of Ne = 0.100

atomic mass of Neon = 20.18 g

Process

1.- Use proportions to find the answer

                   20.18 g of Ne  1 mol of Ne

                        x                  0.1 moles

                        x = (0.1 x 20.18)/1

                        x = 2.018

2.- Consider the significant figures

      0.100 has three significant figures so the answer must be  2.02 g

answer

i think the answer is a) as air pressure in an area increases, the density of the gas particles in that area decreases.

hope it