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