Pls help me i dont know this

1) If I had 12.6 mol Cl2 how many mol of FeCl3 would be made in:
2Fe + 3Cl2 --> 2FeCl3

Question 8 options:

8.4

4.2

12.6

2) If I had 500g of Fe, how many mol FeCl3 would be produced in:
2Fe + 3Cl2 --> 2FeCl3

Question 9 options:

27.98

8.95

17.91

3)If 2 molecules of one reactant combine with 5 molecules of another to produce 3 molecules of a product, then which of the following is the correct representation of the reaction?

Question 10 options:

2A + 3B --> 5C

2A + 5B --> 3C

A2 + B5 --> C3

4) When ethane (C2H6) burns, it produces carbon dioxide and water:

2C2H6 (g) + 7O2 (g) 4CO2 (g) + 6H2O (l)

How many moles of water will be produced when 16 moles of ethane are burned?

Question 11 options:

64 moles

32 moles

48 moles