# Chemistry

A 2.52g sample of a compound containing only carbon, hydrogen, nitrogen, oxygen, and sulfur was burned in excess O to yield 4.36g of CO2 and 0.892g of H20. Another sample of the same compound of mass 4.14g, yielded g of SO3. A third sample, of mass, 5.66g, yielded 2.80 g of HNO3. Calculate the empirical formula of the compound. Express in a chemical formula of CHSNO.

1. 👍
2. 👎
3. 👁
1. Here is how you do the 2.52g sample.
Calculate %C and %H.

4.36 g CO2 x (atomic mass C/molar mass CO2) = g C
(g C/g sample)*100 = %C

Do H the same way.
Make a new calculation for S and N. Note you have no mass for SO3.
Make a new calculation for N.

%C,H, S, O, and N should add to 100%; therefore, 100%-(%C + %H + %S + %N) = %O

Now take 100 g sample which will give you the percents as grams. Convert grams to moles of each by dividing by the atomic mass of each element. Then find the ratio of each element to each other in small whole numbers. The easy way to do that is to divide the smallest number by itself; then divide all of the other numbers by itself and round to whole numbers if necessary. DON'T round anything over 0.15. Post your work if you get stuck.

1. 👍
2. 👎
2. C7H4S2N2O1

1. 👍
2. 👎
3. C5H5SNO

1. 👍
2. 👎
4. C6H7SNO2

1. 👍
2. 👎
5. C5H5SNO

1. 👍
2. 👎
6. C6H7SNO2

1. 👍
2. 👎
7. C5H5SNO

1. 👍
2. 👎
8. C6H8SNO2 not H7 because your are forgetting to add the moles of H from HNO3 to the H in H20.

1. 👍
2. 👎
9. C5H5SNO2 I used all attempts of Pearson for this

1. 👍
2. 👎
10. C5H5NO2

1. 👍
2. 👎

## Similar Questions

1. ### science

All biomolecules are made up of the elements carbon, hydrogen, nitrogen, oxygen, and sulfur. carbon, hydrogen, nitrogen, and oxygen. carbon, hydrogen, oxygen, and sulfur. carbon, hydrogen, and oxygen.*** Nucleic acids are the

2. ### Biology

1. Which elements are most abundant in living organisms? A. hydrogen, carbon, calcium, potassium, oxygen, and phosphorus B. oxygen, calcium, phosphorus, sodium, hydrogen, and carbon C. carbon, potassium, iron, magnesium, hydrogen,

3. ### C hemistry

An unknown compound contains only carbon, hydrogen, and oxygen . Combustion of 2.50 g of this compound produced 3.67 g of carbon dioxide and 1.50 g of water. What is the empirical formula of a substance that contains 8.33×10−2

4. ### chemistry

When carbon is burned in air, it reacts with oxygen to form carbon dioxide. When 24.0 of carbon were burned in the presence of 76.8 of oxygen, 12.8 of oxygen remained unreacted. What mass of carbon dioxide was produced?

1. ### Chemistry

When carbon is burned in air, it reacts with oxygen to form carbon dioxide. When 26.4 g of carbon were burned in the presence of 82.1 g of oxygen, 11.7 g of oxygen remained unreacted. What mass of carbon dioxide was produced?

2. ### CHEM

A 0.4647-g sample of a compound known to contain only carbon, hydrogen, and oxygen was burned in oxygen to yield 0.8635 g of CO2 and 0.1767 g of H2O. What is the empirical formula of the compound? i got C3H3O2 IS IT RIGHT?

3. ### Chemistry 1201

An unknown compound contains only carbon, hydrogen, and oxygen (C?H?O?). Combustion of 6.50 of this compound produced 9.53 g of carbon dioxide and 3.90 g of water. 1) How many moles of Carbon? 2) How many moles of Hydrogen?

4. ### Chemistry

A compound containing only carbon, hydrogen and oxygen is subjected to elemental analysis. Upon complete combustion, a .1804g sample of the compound produced .3051g of CO2 and .1249g of H2O. What is the empirical formula of the

1. ### Stoichiometry

4. Vitamin C, M= 176.12 g/mol, is a compound of composed of carbon, hydrogen, and oxygen. Vitamin C is found in many natural sources especially citrus fruits. When a 1.000-g sample of vitamin C is burned in a combustion apparatus

2. ### Chemistry

A compound contains only nitrogen and hydrogen and is 87.4% nitrogen by mass. A gaseous sample of the compound has a density of 0.977 g/L at 680. torr and 84.1°C. What is the molecular formula of the compound?

3. ### chemistry

An unknown compound contains only carbon, hydrogen, and oxygen (CxHxOx). Combustion of 3.50G of this compound produced 5.13G of carbon dioxide and 2.10G of water A.How many moles of carbon, , were in the original sample? b. How

4. ### Chem

A sample of an unknown biochemical compound is found to have a percent composition of 55.03 percent carbon, 5.54 percent hydrogen, 32.10 percent nitrogen and the balance oxygen. What is the simplest formula for this compound ? How