please answer all of the questions
1. There are ______ moles in 9.01 x 10^23 atoms.
none of the above
15
0.150
1.50
2. How many sulfur atoms are present in 41.8 moles of sulfur?
Question 2 options:
2.52 x 10^25 S atoms
6.94 x 10^29 S atoms
1.44 x 10^24 S atoms
4.18 x 10^25 S atoms
3.How many moles would 1.00 x 10^23 molecules of methane (CH4) represent?
Question 3 options:
1.66 moles
0.166 moles
0.0166 moles
none of the above
4.How many moles of iron (Fe) are in a sample of 7.91 x 10^23 atoms of iron?
Question 4 options:
1.31 mol Fe
0.761 mol Fe
7.91 mol Fe
47.6 mol Fe
5.How many oxygen atoms are present in 2.28 moles of nitric acid, HNO3?
Question 5 options:
7.39 x 10^23 O atoms
4.119 x 10^23 O atoms
4.12 x 10^24 O atoms
1.37 x 10^24 O atoms
