# 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 nitrogen. Its molecular weight is 102.2 g/mol. Determine the molecular formula.

Calculate the empirical formula for a chemical compound that gives the following analysis: 65.2 g scandium and 34.8 g oxygen.

A certain compound has an empirical formula of NH2O. Its molar mass is between 55 and 65 g/mol. What is its molecular formula?

compound has a molar mass of 100 g/mol and the percent composition (by mass) of 65.45 percent C, 5.45 percent H, and 29.09 percent O. Determine the empirical formula and the molecular formula.

1. All of these are alike.
Convert g to moles. mols = g/molar mass.
Then find the ratio of the elements to each other with the smallest number being 1.00. The easy way to do that is to divide the smallest number by itself (giving it 1.00), then divide the other numbers by the same small number.
Post your work if you get stuck.

posted by DrBob222

## Similar Questions

1. ### 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
2. ### 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
3. ### Chem

Find the empirical formula of a compound found to contain 63.15 percent carbon 5.30 percent hydrogen and 31.55 percent oxygen I got C27H27O
4. ### chemistry COMPOUNDS?

A compound contains 60.0 grams carbon and 12.0 grams hydrogen 1) what is the percent of carbon in compound? 2) what is the percent of hydrogen in the compound?
5. ### Chemistry

13) Mercury is an environmental pollutant because it can be converted by certain bacteria into the very poisonous substance dimethyl mercury, (CH3)2Hg. This compound ends up in the food chain and accumulates in the tissues of
6. ### math

If there is a 75.0 g quantity of carbon present in each 100 g of a carbon and hydrogen compound, what is the percent composition of hydrogen in this compound? A. 25 g B. 25% C. 75 g D. 75% I say B
7. ### math

If there is a 75.0 g quantity of carbon present in each 100 g of a carbon and hydrogen compound, what is the percent composition of hydrogen in this compound? A. 25 g B. 25% C. 75 g D. 75% I say B
8. ### Chemistry - Combustion Method

This question is confusing me the way its presented and also is relating it to the combustion method that is used to analyze carbon and hydrogen. It can be used to give percent N. It says a sample of a compound that weighs 8.75 mg
9. ### chemistry

The chemical substance in natural gas is a compound called methane. Its molecules are composed of carbon and hydrogen and each molecule contains four atoms of hydrogen and one atom of carbon. In this compound, 0.33597g of hydrogen
10. ### science(chemistry)

an organic compound contains 49.3 percent carbon,6.84percent hydrogen and its vapour density is 73.molecular formula of compound

More Similar Questions