1 mole of He gas has 6022×10x atoms x is 20 23 25 30 H
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1 mole of He gas has 6.022×10x atoms. x is _____
A.
20
B.
23
C.
25
D.
30
Please scroll down to see the correct answer and solution guide.
Right Answer is: B
SOLUTION
He is a noble gas. Thus, it is monoatomic.
Thus, the unit of He gas is He atom itself.
Thus, 1 mole of He gas = 6.022 × 1023 atoms of He.