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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
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