# chem

methyl salicylate has a mass percent composition of 63.2% C, 31.6% O, and 5.26% H.The mass of one molecule of the compound is 2.53 x 10^-22.Determine the empirical formula and the molecular formula for methyl salicylate.

1. 👍 0
2. 👎 0
3. 👁 822
1. Take a 100 g sample and convert grams to moles.
63.2/12 = ??moles C
31.6/16 = ??moles O
5.26/1 = ??moles H.

Now find the ratio of these elements t one another with the smallest number being 1. The easy way to do that is to divide the smallest number by itself (which will automatically make that 1.000), then divide the other numbers by the same small number. Round to whole number unless the values are not close to whole numbers. IN this case, they are not so try multiplying all by 2, then 3, then 4, then 5, etc until all end up close to whole numbers. That will be the empirical formula. I ended up with C8H8O3.
The approximate molar mass is the mass of 1 molecule x 6.022E23.
Then molecular formula mass/empirical formula mass = n. Round n to a whole number and that will give you the molecular formula; i.e., (C8H8O3)n

1. 👍 0
2. 👎 1

## Similar Questions

1. ### Chemistry

Tin (Sn) exists in earths crust as SnO2. Calculate the percent composition by mass of Sn and O in SnO2. Please help me with this question I'm so confused

2. ### Chemistry

The percent composition by mass of an unknown compound with a molecular mass of 60.052 amu is 40.002% C, 6.7135% H, and 53.284% O. Determine the compound's empirical and molecular formulas.

3. ### Chemistry

I've tried to solve this question multiple ways I just can't seem to get it. I just don't understand what I should be doing. An organic liquid is a mixture of methyl alcohol () and ethyl alcohol (). A 0.220- sample of the liquid

4. ### chemistry

A compound with the percent composition shown below has a molar mass of 60.10g/mol. Find its molecular formula: C, 39.97% H, 13.41% N, 46.62%

1. ### Chem

A bottle of win contains 12.5% ethanol by volume. The density of ethanol (C2H5OH) is .79 g/mL. Calculate the concentration of ethanol in wine as mass percent and molality. I calculated molality as 2.4 m/kg, but I'm stumped on the

2. ### Chemistry

A compound with a percent composition by mass of 87.5% N and 12.5% H was recently discovered. What is the number of moles of Hydrogen in this compound? Atomic Mass: N = 14.01, H = 1.008

3. ### Chemistry

calculate the percent composition, by mass, of carbon in Na2CO3. please explain how you get the answer.

4. ### Chemistry Lab

chemical equation for saponification of methyl salicylate in 6 M NaOH. C8H8O3 + NaOH ---> C7H6O3Na + CH3OH + H2O is this the right reaction? is saponification like hydrolysis? what is the hydrolysis of methyl salicylate in 6M HCL?

1. ### AP Chemistry

An organic compound was synthesized and found to contain only C, H, N, O, and Cl. It was observed that when .150g sample of the compound was burned, it produced .138g of CO2 and .0566g of H2O. All the Nitrogen in a different .200g

2. ### chemistry

How do you calculate the mass percent composition of nitrogen in NO2?

3. ### chemistry

Name the compound (CH3)2CHCCCH3 1. 2-methyl-3-pentyne 2. 3-methyl-1-pentyne 3. 5-methyl-2-pentyne 4. 4-methyl-2-pentyne 5. 3-methyl-2-hexane 6. 4-methyl-2-pentene Can you also explain how to draw the structure? Thanks:)

4. ### General Chem.

FeCo3 Calculate the mass percent composition of iron for the third one of these iron ores.