Question #33d48

1 Answer
Apr 10, 2017

Answer:

#3.01 * 10^23#

Explanation:

I assume you're referring to hydrogen gas.

#M_r# #H_2 = 2#

First, find number of moles of hydrogen gas.

Number of moles of #H_2# = #(1g)/(2g/(mol)) = 0.5 mol#

1 mol of #H_2# has #6.02 * 10^23# (Avogadro's constant) #H_2# molecules.

Hence, 0.5 mol would have half of that which is #3.01* 10^23# molecules of #H_2#.