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3 years ago

Based on the information provided here, crude oil is:

Chemistry

2 answers:

Vikentia [17]3 years ago

8 0

Answer: option C, a mixture

Explanation:

Crude oil is a mixture of hydrocarbons and different organic materials. It is refined into useful materials like petrol,diesel and various petrochemicals.

Vikentia [17]3 years ago

6 0

Answer:

Crude oil is a mixture of hydrocarbons

Explanation:

Crude oil is a fossil fuel composed mainly of hydrocarbons, compounds that contain carbon and hydrogen mainly in their molecular structure. Crude oil can also contain small amounts of sulfur, nitrogen and oxygen. It is formed under conditions of high pressure and heat by the transformation of organic matter.

As mentioned, oil is made up of hydrocarbons. And the number of carbon atoms and the way they are placed inside the molecules of the different compounds gives the oil different physical and chemical properties.

So, crude oil is a mixture of hydrocarbons.

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What is the percent composition by mass of sulfur in the compound mgso4

Margaret [11]

Answer:

26.7% is the percent composition by mass of sulfur in a compound named magnesium sulfate.

Explanation:

Molar mass of compound = 120 g/mol

Number of sulfur atom = 1

Atomic mass of sulfur = 32 g/mol

Percentage of element in compound :

$=\frac{\text{Number of atoms}\times \text{Atomic mass}}{\text{molar mas of compound}}\times 100$

Sulfur :

$=\frac{1\times 32 g/mol}{120 g/mol}\times 100=26.7\%$

26.7% is the percent composition by mass of sulfur in a compound named magnesium sulfate.

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