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Sav [38]
3 years ago
7

Compound has a molar mass of and the following composition: element mass % carbon 58.77% hydrogen 13.81% nitrogen 27.42% Write t

he molecular formula of .
Chemistry
1 answer:
lora16 [44]3 years ago
8 0

Answer: C5H14N2

Explanation:

The element mass are:

C = 58.77 g

H = 13.81 g

N = 27.42 g

To get their moles, we have to divide by the molar mass which will be:

C: 58.77 / 12.01 = 4.8934

H: 13.81 / 1.008 = 13.7004

N: 27.42 / 14.01 = 1.9572

We then divide by the smallest mole which will be:

C: 4.8934 / 1.9572 = 2.5

H: 13.7004 / 1.9572 = 7

N: 1.9572 / 1.9572 = 1

We then multiply by 2 so that we can get whole number ratio:

C: 2.5 × 2 = 5

H: 7 × 2 = 14

N: 1 × 2 = 2

Therefore, the empirical formula will be = C5H14N2

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From the information given, the total volume of  rubbing alcohol is 88.2 ml

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Adding 60.5 ml of isopropanol to 27.7 ml of water to make up 88.2 ml will give 68.6 % v/v isopropanol to water  solution.



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The lysis reaction with the formation of two different gases, and the synthesis reaction with the reaction of hydrogen and oxygen support that water is a compound and not an element.

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