Chemistry MP3CP1 Review

Front

What is the molar mass of Zn(C₂H₃O₂)₂?

Back

183.5 g/mol

Front

Calculate the percent by mass of sulfur in Al₂(SO₄)₃.

Back

28%

Front

A chemical formula that shows the actual number and kinds of atoms present in one molecule of a compound is called_________

Back

molecular formula

Front

How many molecules are in 2.5 mol of NaCl?

Back

1.51 x10²⁴ molecules

Front

What is the mass of one mole of aluminum?

Back

27 g

Front

Define molar mass.

Back

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

Front

What is the formula to calculate percent by mass?

Back

(mass of element in 1 mole of compound / molar mass of compound) x 100%.

Front

What is an empirical formula?

Back

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

Front

What is Avogadro's number?

Back

6.022 x 10²³, the number of particles in one mole of a substance.

Front

Define ionic compound.

Back

A compound formed from the electrostatic attraction between oppositely charged ions.