Chapter 10

Question 1

Mole

Answer 1

the SI unit of amount of substance, equal to the quantity containing as many elementary units as there are atoms in 0.012 kg of carbon-12.

Question 2

Avogadro’s number

Answer 2

number of units in one mole of any substance (defined as its molecular weight in grams), equal to 6.022 × 10^23

Question 3

Molar Mass

Answer 3

physical property defined as the mass of a given substance (chemical element or chemical compound) divided by the amount of substance.

Question 4

Empirical formula

Answer 4

simplest positive integer ratio of atoms present in a compound

Question 5

Molecular formula

Answer 5

a formula giving the number of atoms of each of the elements present in one molecule of a specific compound.

Question 6

Hydrates

Answer 6

a compound, typically a crystalline one, in which water molecules are chemically bound to another compound or an element.