The scientist found that 2 grams of hydrogen reacted completely with 16 grams of oxygen. What was the total mass of the water produced?
Answer (3)
total mass of water = 2 +16 = 18g
As mass needs to be conserved
The student is asking about a reaction where hydrogen and oxygen combine to form water. The chemical equation for this reaction can be expressed as 2 H₂ + O₂ → 2 H₂O. According to the law of conservation of mass, the total mass of the reactants must equal the total mass of the products.
Given that 2 grams of hydrogen react with 16 grams of oxygen, we use the stoichiometry of the reaction to determine the total mass of water produced. From the provided data, we see that 2 moles of hydrogen (4.04 grams) react with 1 mole of oxygen (32.0 grams) to produce 2 moles of water (36.04 grams).
However, we are given that only 2 grams of hydrogen are reacting with 16 grams of oxygen. The chemical equation is already balanced with a 2:1 mole ratio for hydrogen to oxygen, and the provided mass values correspond to this ratio. Therefore, since the reactants completely combine without any excess, the total mass of water produced will be the sum of the mass of hydrogen and the mass of oxygen, which is 2 grams + 16 grams = 18 grams of water.
The total mass of water produced from the complete reaction of 2 grams of hydrogen with 16 grams of oxygen is 18 grams. This is based on the principle of conservation of mass. All mass from the reactants is accounted for in the produced water.
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