What is the percent composition by mass of oxygen in
magnesium oxide, MgO?
(Molar mass of MgO = 40.3 g/mol)
%
Your answer should be rounded to three significant figures. Do not include units
In your answer.

Question

Today at 12:15 AM
Chemistry

Answered

What is the percent composition by mass of oxygen in
magnesium oxide, MgO?
(Molar mass of MgO = 40.3 g/mol)
%
Your answer should be rounded to three significant figures. Do not include units
In your answer.

Answer :

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happyplace1234 happyplace1234 · Answer 1 · 2025-03-31T00:20:51-04:00

happyplace1234 happyplace1234

Today at 12:20 AM

What is the percent composition by mass of oxygen in magnesium oxide, MgO?

Answer: 39.7 percent

Answer Link

AarushiAanand AarushiAanand · Answer 2 · 2025-03-31T00:21:09-04:00

The percent composition by mass of oxygen in MgO is 65.84.

What is mass?

The mass of a thing is a measurement of how much matter it contains.

What is percent composition?

Percent composition is the way through which percentage of elements can be determine very easily. Formula:

O% = [tex]M_{A}M_{T}[/tex] ×100

Calculation of percent composition .

For MgO , the mass of oxygen atom is 16.3 and mass of Mg atom is 24.3.

By adding mass of oxygen and Mg total mass will be 40.3.

Now, put the value of given data in above equation:

O% = [tex]M_{A}M_{T}[/tex]×100O%

= 16./24.3×100.

O% = 65.84.

To know more about percent composition and mass click here.

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What is the percent composition by mass of oxygen in magnesium oxide, MgO? (Molar mass of MgO = 40.3 g/mol) % Your answer should be rounded to three significant figures. Do not include units In your answer.

Answer :

What is mass?

What is percent composition?

Other Questions

What is the percent composition by mass of oxygen in
magnesium oxide, MgO?
(Molar mass of MgO = 40.3 g/mol)
%
Your answer should be rounded to three significant figures. Do not include units
In your answer.