1). How many moles of H₂ would be required to produce 9.0 grams of water?
2). What mass of H₂O is formed when excess H₂ reacts with 64 g of O₂?
3). How many moles of SnF₂ will be produced along with 48 grams of H₂?
4). How many moles of sodium are required to produce 40. grams of NaOH?
5). How many grams of NaOH are produced with the reaction of 5.00 moles of water?
6). How many grams of H₂ are produced with the reaction of 36 grams of water?
PLEASE ANSWER THESE I HAVE TO GET A GOOD GRADE OR I WILL FAIL PLZ PLZ HELP :((

1. How many moles of H₂ would be required to produce 9.0 grams of water?

The answer would be approximately 0.4495 moles of H₂.

2. What mass of H₂O is formed when excess H₂ reacts with 64 g of O₂?

A mass of  72g H₂O will be formed.

3.How many moles of SnF₂ will be produced along with 48 grams of H₂?

Approximately 23.811 moles of SnF₂ will be produced.

4. How many moles of sodium are required to produce 40. grams of NaOH?

The answer would be approximately 1.000722 moles of sodium.

I could only answer 4 of them so sorry, I had like check over it.

The last 2 were super confusing for me.