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Given the balanced equation representing a reaction:
2H2 + O2 ==>2H2O
What is the total mass of water formed when 8 grams of hydrogen reacts completely with 64 grams of oxygen?
(1) 18 g (3) 56 g
(2) 36 g (4) 72 g

Respuesta :

taskmasters
We will do stoichiometry in this kind of problem:

8 g H2 x (1 mol H2 / 2.0 g H2) x (2 mol H2O / 2 mol H2) x (18 g H20 / 1 mol H2O) = 72 g H2O

64 g O2 x (1 mol O2 / 32 g O2) x (2 mol H2O / 1 mol O2) x (16 g H2O / 1 mol H2O) = 72 g H2O

Therefore, the total mass of water formed is 72 g.
Eh206

Answer:

Another answer is 82.02 grams

Explanation:

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