Calculating Compound Proportions: Nitrogen and Oxygen Mass Percentages

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In summary, the conversation involves calculating the mass percentages and number of moles of nitrogen and oxygen in two different compounds. The atomic masses for nitrogen and oxygen are also given. The calculations for both compounds are shown, but it is unclear what the question is or what steps have been taken to find a solution.
  • #1
rachelmaddiee
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Homework Statement
N/A
Relevant Equations
I need help with a question
Am I doing this correctly?
Compound 1
Mass percentage of nitrogen 64.17
Atomic mass of nitrogen 14
Compound 1
Mass Percentage of oxygen 35.73
Atomic mass of oxygen 16
Number of moles
64.17/14 = 4.58
35.73/16 = 2.23

Compound 2
Mass percentage of nitrogen 47.23
Atomic mass of nitrogen 14
Compound 2
Mass percentage of oxygen 52.79
Atomic mass of oxygen 16
Number of moles
47.23/14 = 3.37
52.79/16 = 3.29
 

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  • #2
rachelmaddiee said:
Homework Statement:: N/A
Homework Equations:: I need help with a question

Am I doing this correctly?
Compound 1
Mass percentage of nitrogen 64.17
Atomic mass of nitrogen 14

Compound 1
Mass Percentage of oxygen 35.73
Atomic mass of oxygen 16
Number of moles
64.17/14 = 4.58
35.73/16 = 2.23

Compound 2
Mass percentage of nitrogen 47.23
Atomic mass of nitrogen 14
Compound 2
Mass percentage of oxygen 52.79
Atomic mass of oxygen 16
Number of moles
47.23/14 = 3.37
52.79/16 = 3.29
What is the question ?
And what did you do so far to find a solution ?
 

1. How do you calculate the mass percentage of nitrogen in a compound?

The mass percentage of nitrogen in a compound can be calculated by dividing the mass of nitrogen in the compound by the total mass of the compound and multiplying by 100. This will give you a percentage of nitrogen in the compound by mass.

2. What is the formula for calculating the mass percentage of oxygen in a compound?

The formula for calculating the mass percentage of oxygen in a compound is the same as for nitrogen. Divide the mass of oxygen in the compound by the total mass of the compound and multiply by 100.

3. How do you determine the mass of a specific element in a compound?

In order to determine the mass of a specific element in a compound, you can use the mass percentage and the total mass of the compound. Multiply the total mass of the compound by the mass percentage of the specific element to get the mass of that element in the compound.

4. Can the mass percentage of nitrogen and oxygen in a compound be greater than 100%?

No, the mass percentage of nitrogen and oxygen in a compound cannot be greater than 100%. This would mean that the compound contains more mass of these elements than the total mass of the compound, which is not possible.

5. How can the mass percentage of nitrogen and oxygen be used to identify a compound?

The mass percentage of nitrogen and oxygen in a compound can be used to compare with known values of these elements in different compounds. This can help to identify the compound and determine its molecular formula.

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