1)The chemical formula for aspirin is C9H8O4. What is the mass of 0.40 mol of aspirin? How would I find this?
2)The gram molecular mass of oxygen is 16.0 g right?
3)How would I find the mass, in grams, of 3.01 x 10^23 molecules of water?
1. Add the atomic masses of the elements in the formula. That will be 1 mol. Then 0.4 of that will be 0.4 mol.
2. One mol (of anything) contains 6.02 x 10^23 molecules. So find the mols in 3.01 x 10^23 molecules and that times the molar mass of H2O (obtained by adding the atomic masses) will be that many grams.
Post your work if you get stuck.
1 mol of oxygen atoms has a mass of 16 grams.
water is H2O. One mol of water thus has a mass of approximately 18 grams
The mass of of 3.01 x 10^23 molecules of water is:
(3.01 x 10^23/mol) times the mass of one mol of water =
(3.01 x 10^23/mol) 18 grams.
Now, what is 3.01 x 10^23 divided by 1 mol?
1 mol = approximately 6.022*10^23
Question 1:
1 mol of C9H8O4 contains
9 moles of C, 8 moles of H and 4 moles of O. The mass of 1 mol of aspirine is thus:
(9*12 + 8 + 4*16) grams
I did 180.15 x 0.004 and got 72 bc 1 mole of aspirin is 180.15 and my answer options were
A- 72g B- 5.4g C- 80g or D 36.0g
I’m winging it but it might be right :3
1) To find the mass of 0.40 mol of aspirin, you would multiply the molar mass of aspirin by the number of moles. The molar mass of aspirin (C9H8O4) can be calculated by adding up the atomic masses of each element.
The atomic masses are:
C = 12.01 g/mol
H = 1.008 g/mol
O = 16.00 g/mol
So, the molar mass of aspirin is:
(9 * 12.01 g/mol) + (8 * 1.008 g/mol) + (4 * 16.00 g/mol) = 180.18 g/mol
To find the mass of 0.40 mol of aspirin, you would multiply the molar mass by the number of moles:
0.40 mol * 180.18 g/mol = 72.07 g
Therefore, the mass of 0.40 mol of aspirin is approximately 72.07 grams.
2) Yes, the gram molecular mass of oxygen is indeed 16.0 g/mol.
3) To find the mass of 3.01 x 10^23 molecules of water, you can use the concept of molar mass.
The molar mass of water (H2O) is approximately 18.02 g/mol.
So, if you have 3.01 x 10^23 molecules of water, you can find the mass by multiplying the molar mass by the number of moles:
(3.01 x 10^23 molecules) / (6.022 x 10^23 molecules/mol) = 0.5 mol
Mass = 0.5 mol * 18.02 g/mol = 9.01 g
Therefore, the mass of 3.01 x 10^23 molecules of water is approximately 9.01 grams.
To find the mass of 0.40 mol of aspirin, you would first calculate the molar mass of aspirin by adding up the atomic masses of each element in the chemical formula.
The atomic mass of carbon (C) is 12.01 g/mol, hydrogen (H) is 1.01 g/mol, and oxygen (O) is 16.00 g/mol.
To find the molar mass of aspirin:
(9 * 12.01 g/mol) + (8 * 1.01 g/mol) + (4 * 16.00 g/mol) = 180.16 g/mol
Now, you can calculate the mass of 0.40 mol of aspirin by multiplying the molar mass by the number of moles:
0.40 mol * 180.16 g/mol = 72.06 g
Therefore, the mass of 0.40 mol of aspirin is 72.06 grams.
Yes, the gram molecular mass of oxygen is 16.0 g/mol. This means that one mole of oxygen atoms has a mass of 16.0 grams.
To find the mass, in grams, of 3.01 x 10^23 molecules of water, you need to convert the number of molecules to moles and then use the molar mass of water.
The molar mass of water (H2O) is approximately 18.02 g/mol.
To convert the number of molecules to moles, divide the given number of molecules by Avogadro's number (6.02 x 10^23):
(3.01 x 10^23 molecules) / (6.02 x 10^23 molecules/mol) = 0.5 mol
Now, you can calculate the mass in grams by multiplying the number of moles by the molar mass of water:
0.5 mol * 18.02 g/mol = 9.01 g
Therefore, the mass of 3.01 x 10^23 molecules of water is 9.01 grams.
To find the mass of 0.40 mol of aspirin, you need to calculate the molar mass of aspirin and then multiply it by the number of moles.
The molar mass of a compound is calculated by adding up the atomic masses of each element present in the compound. In the case of aspirin (C9H8O4), the atomic masses are as follows:
- Carbon (C): 12.01 g/mol
- Hydrogen (H): 1.01 g/mol
- Oxygen (O): 16.00 g/mol
To find the molar mass of aspirin, you add up the atomic masses:
(9 * 12.01 g/mol) + (8 * 1.01 g/mol) + (4 * 16.00 g/mol) = 180.16 g/mol
Now that you know the molar mass of aspirin is 180.16 g/mol, you can calculate the mass of 0.40 mol of aspirin by multiplying the molar mass by the number of moles:
0.40 mol * 180.16 g/mol = 72.06 grams
Therefore, the mass of 0.40 mol of aspirin is 72.06 grams.
For the second question, yes, the gram molecular mass of oxygen is indeed 16.0 g.
To find the mass of 3.01 x 10^23 molecules of water in grams, you need to convert the number of molecules to moles and then multiply by the molar mass of water.
The molar mass of water (H2O) is approximately 18 g/mol, which can be calculated by adding up the atomic masses of hydrogen (H) and oxygen (O).
To convert the number of molecules to moles, divide the given number of molecules (3.01 x 10^23) by Avogadro's number, 6.02 x 10^23. This will give you the number of moles.
(3.01 x 10^23 molecules) / (6.02 x 10^23 molecules/mol) = 0.5 mol
Now that you have the number of moles (0.5 mol) and the molar mass of water (18 g/mol), you can calculate the mass of water by multiplying the number of moles by the molar mass:
0.5 mol * 18 g/mol = 9 grams
Therefore, the mass of 3.01 x 10^23 molecules of water is 9 grams.