Section 1.C Review

molar mass

100

This is the molar mass of CO₂

What is 44.01 g/mole

200

This is the molar mass of ammonium nitrate NH₄NO₃

What is 80.04 g/mole

300

This is the molar mass of Cu₃(PO₄)₂

380.58 g/mole

400

This is the molar mass of silver

107.87 g/mole

500

This is the molar mass of epsom salt, a hydrated crystal with the formula MgSO₄∙7H₂O

120.37 g/mole

oxidation and reduction reactions

100

A reaction that contains both an oxidation and a reduction half reaction is known as this:

What is a redox reaction (or oxidation-reduction reaction)?

200

When electroplating, the reduction half-reaction will occur at this electrode?

What is the cathode?

300

The process by which electrons are lost is known as:

What is oxidation?

400

This half reaction represents the formation of solid copper when Cu²⁺ ions gain electrons.

What is:

Cu²⁺ + 2e^- → Cu

500

In the reaction below, which reactant is oxidized?

Cu + 2Ag⁺ → 2Ag + Cu²⁺

What is Cu ?

miscellaneous

100

There are this many moles of hydrogen atoms in 4 moles of water, H₂O.

What is 8?

200

Oxidation and reduction are processes that involve the transfer of this subatomic particle.

What are electrons?

300

This is the percent by mass of sodium in NaCl.

What is 39.35% ?

400

This half reaction represents the oxidation of sodium metal to the positive sodium ion Na⁺

What is 

Na → Na⁺ + e^-

500

This is the percent by mass of copper in CuCl₂

What is 47.2% ?

mole-mass-particle calculations

100

Six moles of ammonia, NH₃ , contain this number of ammonia molecules:

What is 3.6 x 10²⁴ molecules?

200

How many moles of sulfur are present in a 16g sample of sulfur?

What is 0.50 moles?

300

This is the number of moles of Cu in 125g Cu.

What is 1.97 moles?

400

This is the number of g of sugar, C₁₂H₂₂O₁₁ in 0.25 moles of sugar.

What is 85.58g?

500

3.45 x 10²⁴ atoms of silver are in this many moles of silver, Ag.

5.73 moles

vocabulary

100

The gaining of electrons is also known as

What is reduction?

200

The unit of measurement that represents the amount of a substance that contains the same number of atoms as there are in exactly 12 grams of Carbon-12 is:

What is the mole?

300

This is the layer of the earth in which the mineral resources are found.

What is the lithosphere?

400

This is the mass in grams of exactly one mole of a substance.

What is molar mass?

500

This number represents the number of particles in one mole of a substance.

What is Avogadro's number?