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KatRina [158]
3 years ago
6

Calculation of Percent Composition

Chemistry
1 answer:
Trava [24]3 years ago
6 0

Answer:

C: 61.0%, H: 15.3%, N: 23.7%

Explanation:

We can calculate the percent by mass of each element using the following expression.

%Element = (mass of the element/mass of the compound) × 100%

Carbon

%C = (7.34 g/12.04 g) × 100% = 61.0%

Hydrogen

%H = (1.85 g/12.04 g) × 100% = 15.3%

Nitrogen

%N = (2.85 g/12.04 g) × 100% = 23.7%

The percent composition of this compound is C: 61.0%, H: 15.3%, N: 23.7%.

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Keto - enol tautomerism

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3 years ago
A student is investigating the effect of concentration on the colour of a solution of copper sulfate.She wished to make up 250cm
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Answer:

79.8g/dm³

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0.5mol CuSO4/dm³ * (159.609g/mol) =

<h3>79.8g/dm³</h3>
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