MASS (GRAMS)
Nac1- 0.9992
C12H22O11- 0.9822
NH4C1- 0.9510
C6H5OH- 0.9723
C9H20- 1.0038
*Find the Molar Mass (g/mol) for each *
*Find the Moles of each element for each *
*Find the Atoms of each element for each *
- if possible show work and or equation set up to find answers
For molar mass, look up the atomic masses in the periodic table and add them together. For example, for C12H22O11 that's about (12*12 + 1*22 + 11*16) = about 342.
mols = grams/molar mass
atoms--look at the subscripts; i.e., for C12H22O11 there are 12 atoms C/mol; 22 atoms H per mol and 11 atoms O per mol. If you want total atoms, that is atoms/mol x # mols x 6.02E23 = ?
To find the molar mass (g/mol) for each compound, you need to calculate the sum of the atomic masses of the elements in each compound.
1. Nac1:
- The molar mass of NaCl can be calculated by finding the atomic masses of Na (sodium) and Cl (chlorine) and adding them together.
- The atomic mass of Na is 22.99 g/mol, and the atomic mass of Cl is 35.45 g/mol.
- Molar mass of NaCl = (22.99 g/mol) + (35.45 g/mol) = 58.44 g/mol
2. C12H22O11:
- The molar mass of C12H22O11 can be calculated by finding the atomic masses of C (carbon), H (hydrogen), and O (oxygen) and multiplying them by the respective subscripts.
- The atomic mass of C is 12.01 g/mol, the atomic mass of H is 1.008 g/mol, and the atomic mass of O is 16.00 g/mol.
- Molar mass of C12H22O11 = (12.01 g/mol * 12) + (1.008 g/mol * 22) + (16.00 g/mol * 11) = 342.29 g/mol
3. NH4Cl:
- The molar mass of NH4Cl can be calculated by finding the atomic masses of N (nitrogen), H (hydrogen), and Cl (chlorine) and multiplying them by the respective subscripts.
- The atomic mass of N is 14.01 g/mol, the atomic mass of H is 1.008 g/mol, and the atomic mass of Cl is 35.45 g/mol.
- Molar mass of NH4Cl = (14.01 g/mol * 1) + (1.008 g/mol * 4) + (35.45 g/mol * 1) = 53.49 g/mol
4. C6H5OH:
- The molar mass of C6H5OH can be calculated by finding the atomic masses of C (carbon), H (hydrogen), and O (oxygen) and multiplying them by the respective subscripts.
- The atomic mass of C is 12.01 g/mol, the atomic mass of H is 1.008 g/mol, and the atomic mass of O is 16.00 g/mol.
- Molar mass of C6H5OH = (12.01 g/mol * 6) + (1.008 g/mol * 6) + (16.00 g/mol * 1) = 94.11 g/mol
5. C9H20:
- The molar mass of C9H20 can be calculated by finding the atomic masses of C (carbon) and H (hydrogen) and multiplying them by the respective subscripts.
- The atomic mass of C is 12.01 g/mol, and the atomic mass of H is 1.008 g/mol.
- Molar mass of C9H20 = (12.01 g/mol * 9) + (1.008 g/mol * 20) = 130.29 g/mol
To find the moles of each element for each compound, you need to divide the mass of each element by its molar mass.
To find the atoms of each element for each compound, you can use Avogadro's number of particles per mole (6.022 × 10^23) and multiply it by the moles of each element.