Chemistry, 11.02.2020 22:25 jd326677777gfc

A hydrocarbon is burnt completely to give 3.447g of
C
O
2
and 1.647g of
H
2
O
. What is the empirical formula ?

Answers: 2

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Answers

Answer from: bakerj5203

The answer to your question is C₃H₇

Explanation:

Data

mass of CO₂ = 3.447 g

mass of H₂ = 1.647 g

Empirical formula = ?

Process

1.- Write the chemical reaction

CxHy + O₂ ⇒ CO₂ + H₂O

2.- Calculate the mass and moles of carbon

44 g of CO₂ 12 g of C

3.447 g of CO₂ x

x = (3.447 x 12) / 44

x = 0.94 g of C

12 g of C 1 mol

0.94 g of C x

x = 0.0783 moles of C

3.- Calculate the grams and moles of H

18 g of H₂O 2 g of H

1.647 g of H₂O x

x = (1.647 x 2)/18

x = 0.183 g of H

1 g of H 1 mol

0.183 g x

x = (0.183 x 1)/1

x = 0.183 mol of H

4.- Divide by the lowest number of moles

Carbon = 0.0783 /0.0783 = 1

Hydrogen = 0.183 / 0.0783 =2.3

5.- Write the empirical formula

C₁H₂.₃ = 3C₁H₂.₃ = C₃H₇

Answer from: Quest

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Answer from: Quest

You would be correct, boiling water does disinfect contamination. the property of disinfecting means to kill germs, bacteria and other pathogens or contamination that might cause an infection or cause a person to become sickly. a couple methods of disinfecting are using soap, other cleaning supplies or by simply "boiling" the contaminate. the reason why boiling water disinfects certain attributes is because some cells cannot survive the heat and pressure.

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A hydrocarbon is burnt completely to give 3.447g of
C
O
2
and 1.647g of

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