C – 19,9%, H – 2,2%, N – 11,6%, O – x%
1 percentage
The entire molecule is 100% and all the components of the compound add up to 100%.
100% - 19,9% - 2,5% - 11,6% = 66,1%
The compound contains 66,1% oxygen.
2 molar masses
3 masses
The compound has a molar mass of 120g/mol. So one molecule weighs 120 g. To find out how much the percentage of a component weighs, you have to calculate it using the molar mass.
<u>carbon</u>
19,8% of 120g
One molecule contains 23,76g of carbon.
<u>hydrogen</u>
2,5% of 120g
One molecule contains 3g of hydrogen.
<u>oxygen</u>
66,1% of 120g
One molecule contains 79,32g of oxygen.
<u>nitrogen</u>
11,6% of 120g
One molecule contains 13,92g of nitrogen.
4 amount of substance
<u>carbon</u>
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The compound contains about 2 moles of carbon.
<u>hydrogen</u>
The compound contains about 3 moles of hydrogen.
<u>oxygen</u>
The compound contains about 5 moles of oxygen.
<u>nitrogen</u>
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The compound contains about 1 moles of nitrogen.
5. molecular formula
The formula results from the ratio of the amounts of substance.
