Chemical Quantities

Molar MassMolar Volume

Avogadro’s NumberMole Road Map

Glencoe Chapter 10.1-10.3

Ratio Problem Solving: Review• Conversions can be done easily utilizing the following steps:

1. Identify given quantity and units.

2. Identify desired units.

3. Make ratio of desired units to given units (desired/given)

4. Make equation as follows:

_____desired units = given units X ratio of desired units/given units

5. Solve.

Ways of Counting Things

Counting Particles

Converting Between Moles and Particles

• Convert 3.01 x 1023 He atoms to moles

Molar Mass

• Ca = • H2O = • Ca(NO3)2 =

Molar Mass

• Also known as:

Molar Mass Conversion Examples

• Convert 1.1 g of water to moles.

• Convert 2.2 moles of sodium chloride to grams

Molar Volume

• Convert 0.44 L of Ne gas to moles. (@STP)

Mole Road Map!

MOLES

MASS (g)NUMBER

OF PARTICLES

VOLUME OF GAS (L)

Practice Problems

1. Convert 55.0 g of sodium to moles2. Convert 0.66 moles of nitrogen gas to grams (@STP)3. Convert 7.7 L of oxygen gas to moles (@STP)4. Convert your answer to #3 to grams5. Convert 8.8 x 1024 Ca atoms to moles6. Convert your answer to #5 to grams7. Convert 99.0 g of Iron (II) chloride to moles8. Convert 0.10 moles of potassium nitrate to grams