Shana solves stoichiometry problems using the equation for the synthesis of water. Which interpretation of the balanced equation
2 answers:
Answer : The wrong statement is, Two grams of hydrogen react with one gram of oxygen to form two grams of water.
Explanation :
Synthesis reaction : It is a type of reaction in which the reactants present in elemental state that reacts to give a single product.
It is represented as,
where, X and Y are the reactants and XY is the product.
The balanced synthesis reaction of water will be,
By the stoichiometry we can say that, 2 moles of hydrogen react with 1 mole of oxygen
to form 2 moles of water
as a single product.
Or we can say that,
2 molecules of hydrogen react with 1 molecule of oxygen to form 2 molecules of water.
Or,
2 liters of hydrogen react with 1 liter of oxygen to form 2 liters of water.
These three statements are correct.
But the statement, 2 grams of hydrogen react with 1 gram of oxygen to form 2 grams of water are incorrect statement.
Hence, the wrong statement is, Two grams of hydrogen react with one gram of oxygen to form two grams of water.
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Answer:
The mass percentage composition of nitrogen in the sample of the cleaning detergent is approximately 16.78%
Explanation:
The given mass of the sample of the cleaning detergent, m₁ = 20.5 g
The mass of the ammonium hydroxide, NH₄OH in the detergent, m₂ = 8.61 g
The molar mass of NH₄OH = 35.04 g/mol
The molar mass of nitrogen, N = 14.01 g/mol
Therefore, the mass, m₃ of nitrogen, N, in 8.61 g of ammonium hydroxide, NH₄OH, is found as follows;
m₃ = (14.01/35.04) × 8.61 g = (402,087/118,800) g ≈ 3.44 g
The mass of nitrogen, N, in the ammonium hydroxide, NH₄OH, contained in the 20.5 g sample of the cleaning agent, m₃ ≈ 3.44 grams
The percentage composition of nitrogen in the sample of the cleaning detergent, %N is given as follows;
Therefore;
%N ≈ ((3.44 g)/(20.5 g)) × 100 ≈ 16.78 %
The percentage composition of nitrogen, %N ≈ 16.78%.