Calculating Relative Formula Masses (CFU)

Front

What is the relative formula mass (M_r) of sulfuric acid, H₂SO₄?

Back

98

Front

How do you calculate the relative formula mass (M_r) of a molecule with 3 carbon atoms, 8 hydrogen atoms, and 1 oxygen atom?

Back

C: 12, H: 1, O: 16; M_r = (3*12) + (8*1) + (1*16) = 60.

Front

What is the relative formula mass (M_r) of methane, CH₄?

Back

16

Front

How do you find the relative formula mass (M_r) of iron (III) oxide, Fe₂O₃?

Back

Fe: 56, O: 16; M_r = (2*56) + (3*16) = 160.

Front

What is the relative formula mass (M_r) of sodium chloride, NaCl?

Back

58.5

Front

Define relative formula mass (M_r).

Back

The sum of the atomic masses of all atoms in a chemical formula.

Front

What is the atomic mass of Carbon (C)?

Back

12

Front

What is the atomic mass of Hydrogen (H)?

Back

1

Front

What is the atomic mass of Oxygen (O)?

Back

16

Front

What is the atomic mass of Sodium (Na)?

Back

23