# Chemistry

posted by anonymous

1) The empirical formula of a compound that is 25.9% nitrogen and 74.1% oxygen is....

2) empirical formula of a compound that consists of 4.80 grams of carbon, 1.20 grams of hydrogen, and 2.80 grams of nitrogen is...

3)empirical formula of a substance composed of 3.05% carbon, 0.26% hydrogen, and 96.69% iodine is...

4) Symclosene has an empirical formula of CClNO and a molecular mass of 232.42 u. What is the molecular formula of symclosene?

5) Empirical formula of a compound is C2H3O. The gram formula mass of the compound is 172g. What is the molecular formula?

6) The molecular formula of a given compound is C4H10. The empirical formula of the same compound would be:

#2 through #6 are correct. #1 is not. Didn't you mean N2O5?

1. Akighir Reuben

Please check my from the question i asked . (1) C=40.0g x
1mole= 12.0g
3.33moles
H= 6.7g x
1mole =1.0g
6.7moles
O=53.3g x
1mole = 16.0g
3.33moles
mole ratio
C = 3.33/3.33
=1.00
= 1
H = 6.7/3.33
= 2. 01
= 2
O = 3.33/3.33
= 1.00
= 1
So, the empirical formular is CH2O

## Similar Questions

1. ### Chemistry (Check)

True or False The empirical formula of a compound is always the same as the molecular compound. My Answear: True The empirical formula for acetylene is CH. The molecular formula is C2H2. Another example: The empirical formula for glucose …
2. ### chemistry

1.to calculate the percent by massof an element in a known compound, divide the mass of the element in one mole by the _______and multiply by 100%. A(n) _______formula represents the lowest________ratio of the elements in a compound. …
3. ### Chemistry

A compound contains only carbon, hydrogen, nitrogen, and oxygen. Combustion of 0.157 of the compound produced 0.213g CO2 and 0.0310 g H20. In another experiment, it is found that 0.103g of the compound produces 0.0230 g NH3. What is …
4. ### chemistry

In the course of research, a chemist isolates a new compound with an empirical formula C3H3O2. 4.97 g of the compound when dissolved in 100. g of water produces a solution with a freezing point of −0.325°C. What is the molecular …
5. ### General Chemistry

Answer Check Please... A compund contains only hydrogen and nitrogen and is 12.6% hydrogen by mass. A gaseous sample of the compound has desity of 0.925g/L at 690 torr and 110 degrees Celsius. What is the molecular formula of the compound?
6. ### Chemistry

I need some help with some of these questions: The action of bacteria on meat and fish produces a poisonous compound called cadaverine. As its name implies, it stinks! It is 58.77 percent carbon, 13.81 percent hydrogen, and 27.40 percent …
7. ### Chemistry

I need some help with some of these questions: The action of bacteria on meat and fish produces a poisonous compound called cadaverine. As its name implies, it stinks! It is 58.77 percent carbon, 13.81 percent hydrogen, and 27.40 percent …
8. ### College Chemistry 3

Find the empirical Formula of a compound that is 30.4% nitrogen by mass, and consists of only nitrogen and oxygen. What is its molecular formula if its molar mass is 92g/mol?
9. ### Science/ Chemistry

When 0.422 g of phosphorus is burned, 0.967 g of a white oxide (a compound of phosphorus and oxygen) is obtained. a. Determine the empirical formula of the oxide. So for the empirical Formula I got P_2O_5 now it wants me to Write a …
10. ### Chemistry

a compound of nitrogen and oxygen is 30.46% by mass N and 69.54% by mass O. the molar mass if the compound was determined to be 92g/mol. What is the empirical formula of the compound?

More Similar Questions