Question

The mass of oxygen required to prepare 2 moles of water is
1) 16g
2) 32g
3) 8g
4)64g​

Answer 1

Explanation:

here is your answer buddy

Answer 2

Answer:

The correct answer is 32 g.

Explanation:

• When water and oxygen combine following reaction take place :-
  $2H2$ + $O2$ =  $2H2O$  
  Here we can see that 2 moles of Hydrogen is required to make two
  moles of Water .
  we know ,
  molar mass of Oxygen = 16 g
  To make two moles of water ,
  Mass = molar mass × number of moles
           = 16 × 2
           = 32 gram
  
  Hence , 32 gram of oxygen is required to make 2 moles of water.