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If 230 g sample of a compound contains 136.6 g of carbon 26.4 g of hydrogen and 31.8 g of nitrogen The rest is oxygen What is the mass percent of oxygen in the compound?
Wiki User
∙ 10y ago
The mass of the elements that are not oxygen equals 194.8g. The mass of oxygen is 230g - 194.8g = 35.2g of oxygen.
Mass percent of oxygen = 35.2g O/230g x 100 = 15% O
Wiki User
∙ 10y ago
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What is the prercent by mass of hydrogen in NH3?
The formula shows that there are three times as many atoms of hydrogen as of nitrogen in the compound. The gram atomic masses are 1.00794 for hydrogen and 14.0067 for nitrogen. Therefore, the percent by mass of hydrogen in the compound is 100{[3(1.00794)]/[3(1.00794) + 14.0067] or 17.7553 %, to the justified number of significant digits.
Does sugar have hydrogen?
Sugar contains 6 percent of hydrogen content
Does hydrogen make up 80 percent of the air you breathe?
No. You are thinking of nitrogen.
What is the empirical formula of a compound that contains 53.73 percent Fe and 46.27 percent of S?
Fe2S3, I think...
What is the empirical formula of a compound that contains 20 percent calcium and 80 percent bromine by mass?
CaBr2 :)
What is the prercent by mass of hydrogen in NH3?
The formula shows that there are three times as many atoms of hydrogen as of nitrogen in the compound. The gram atomic masses are 1.00794 for hydrogen and 14.0067 for nitrogen. Therefore, the percent by mass of hydrogen in the compound is 100{[3(1.00794)]/[3(1.00794) + 14.0067] or 17.7553 %, to the justified number of significant digits.
A 83.6 g sample of an unknown compound contains 19.4 g of hydrogen What is the percent by mass of hydrogen in the compound?
19.4 / 83.6 = 0.232057416 x 100 = 23.21% de H
What compound has a lower percent of mass by nitrogen- NO or N2O3?
The oxide N2O3 has a lower percent of mass nitrogen.
What 4 elements account for more than 95 percent of the human body?
carbonnitrogenoxygenhydrogen
What four elements make up 96 percent of living organisms?
The following four elements make up 90 percent of the mass of living things: Oxygen - 65% Carbon - 18.5% Hydrogen - 9.5% Nitrogen - 3.2%
What contains 75 percent of the atmosperic gases?
nitrogen
Does sugar have hydrogen?
Sugar contains 6 percent of hydrogen content
Which four elements make up approximately 96 percent of living matter?
Carbon, hydrogen, nitrogen and oxygen.
What is the emprical formula for the compound that contains 20 percent hydrogen and 80 percent carbon?
The atomic mass of hydrogen is 1 and that of carbon is 12, to the nearest integer. Therefore, a compound that contains 20 percent hydrogen and 80 percent carbon contains atoms of carbon in the ratio of 20:(80/12) = 20:(20/3) = 20 X 3/20 = 3. The smallest whole number ratio corresponding to this is 1:3, which corresponds to an empirical formula of CH3. (However, since carbon normally has a valence of 4 in hydrocarbons, the actual formula is probably C2H6.)
What is made up of 62 percent Hydrogen 24 percent Oxygen 12 percent Carbon and 1 percent Nitrogen?
The atmosphere.
What five elements comprise 99.5 percent of the human body?
Nothing. But the closest is water, which makes up about 60%.
Does hydrogen make up 80 percent of the air you breathe?
No. You are thinking of nitrogen.
