Question

The molar mass of H2O is 18.01 g/mol. The molar mass of O2 is 32.00 g/mol. What mass of H2O, in grams, must react to produce 50.00 g of O2?

Answer 1

2H2O ---> 2H2 + O2
1. (50.00g O2)/(32.00g/mol O2) = 1.563mol O2

2. (1.563mol O2)(2mol H2O/1mol O2) = 3.125mol H2O

3. (3.125mol H2O)(18.01g/mol H2O) = 56.28g H2O needed to make 50.00g O2

Answer 2

The study of chemicals is called chemistry. There are two types of solution in the chemistry and these are acid and base.

The correct answer to the question is as follows:-

What are moles?

• The mole is the base unit of the amount of substance in the International System of Units.

• It is defined as exactly 6.02214076×10²³ elementary entities, which may be atoms, molecules, ions, or electrons.

The reaction is as follows:-

$2H_2O ---> 2H_2 + O_2$

The moles are as follows:-

• ($\frac{(50.00g O2)}{(32.00g/mol O2)}$= 1.563mol O2
• $\frac{(1.563mol O2)}{(\frac{2mol H2O}{1mol O2)}}$= 3.125mol H2O
• $\frac{(3.125mol H2O)}{(\frac{18.01g}{1mol H2O)}}$ = 56.28g H2O needed to make 50.00g O2

Hence, the correct answer is 56.28.

For more information about the question, refer to the link:-

https://brainly.com/question/15209553