Chemistry Mole Review

Front

What is the molar mass of Silver Fluoride?

Back

126.866 g/mol

Front

Which has more atoms, 5.5 moles of iron or 5.5 moles of carbon?

Back

Neither

Front

What is the molecular formula if the empirical formula is CH2O and the molar mass is 180?

Back

C6H12O6

Front

What is the empirical formula if the mole ratio is H1O3.5?

Back

H2O7

Front

What is the molecular formula of Epinephrine if it contains 59.0% C, 7.15% H, 26.20% O, and 7.65% N with a molar mass of 183 g/mol?

Back

C9H13NO3

Front

Define molar mass.

Back

The mass of one mole of a substance, typically expressed in grams per mole (g/mol).

Front

What is an empirical formula?

Back

The simplest whole-number ratio of atoms of each element in a compound.

Front

How do you calculate the number of atoms in a mole?

Back

Use Avogadro's number, which is approximately 6.022 x 10^23 atoms/mole.

Front

What is the difference between empirical and molecular formulas?

Back

Empirical formula shows the simplest ratio of elements, while molecular formula shows the actual number of atoms in a molecule.

Front

What is the formula to calculate the number of moles?

Back

Number of moles = mass (g) / molar mass (g/mol).