Chapter 1
Chapter 2
Chapter 3
More Chapter 3
Chapter 4
100

How many oxygen atoms are in Al(NO3)3 ∙ 5H2O?

14 atoms

100

Which experiment determined the charge of an electron?

a. Aston’s positive ray experiment

b. Millikan’s oil drop experiment

c. Thomson’s cathode ray experiment

d. Rutherford’s gold foil experiment

b. Millikan's oil drop experiment

100

What is the molar mass of glucose (C6H12O6)?

180.156 g/mol

100

Which are the following compounds are insoluble in water? There may be more than 1 answer. 

a. Ca(NO3)2

b. Ca(OH)2

c. CaSO4

c. CaSO4

100

How many grams of calcium chloride are needed to make 250 mL of a 0.15 M solution?

4.2g of calcium chloride

200

Name two chemical and two physical changes

Chemical Changes:

- Combustion, rotting, rusting, digestion, cooking

Physical Changes:

- Melting, shredding, boiling, chopping, stretching

200

What is the charge, number of protons, number of electrons, and number of neutrons for the following ion if the mass number is 108:

Ag+

Charge: 1+

Protons: 47

Electrons: 46

Neutrons: 61

200

A common drying agent of organic molecules has the empirical formula P2O5. Its mass spectrum shows an M+ peak at 283.89, which molecular formula is correct?

a. P2O5

b. P4O10

c. P5O6

d. P6H15 

P4O10

200

What is the mass percentage of oxygen in magnesium carbonate trihydrate?  The molar mass of anhydrous magnesium carbonate is 84.31 g/mol.

69.38%

200

How many milliliters of 5.0 M CuSO4 solution should be used to make 200.0 mL of a 0.30 M CuSO4 solution?

12 mL

300

Which elements exist as diatomic molecules in nature?

Hydrogen, Nitrogen, Oxygen, Fluorine, Chlorine, Bromine, and Iodine

300

What is name of CH3COO-?

Acetate

300

How many carbon atoms are there in a 1.00 g sample of stearic acid (C18H36O2)? The molar mass of stearic acid is 284.468 g/mol.

3.81 * 1022 atoms C

300

Balance the following chemical equation:

C6H14(g) + O2(g) → CO2(g) + H2O(l)

2C6H14(g) + 19O2(g) → 12CO2(g) + 14H2O(l)

300

Which of the following solutions will have the highest conductivity?  Assume the identity of the ion does not impact the conductivity.

a. 0.20 M KNO3(aq)

b. 0.20 M NaCl(aq)

c. 0.15 M MgCl2(aq)

d. 0.10 M MgSO4(aq)

c. 0.15 M MgCl2(aq)

400

What is the answer to this problem with the correct number of sig figs?

(0.0200)/(115.492 - 113.692)

0.0111

400

Identify the type of name of the following compounds:

P2O5

MgBr2

HClO3

Binary Molecular Compound: Diphosphorous Pentoxide

Binary Ionic Compound: Magnesium Bromide

Oxoacid: Chloric Acid

400

Consider the reaction between iron (III) oxide and carbon monoxide:

Fe2O3(s) + 3 CO(g) → 2 Fe(s) + 3 CO2(g)

129g of iron(III) oxide reacts with 54.3 g of carbon monoxide. What is the limiting reactant? The respective molar masses of the reactants are 159.69 g/mol and 28.01 g/mol.

Carbon monoxide (CO) is the limiting reactant

400

A hydrocarbon fuel is fully combusted with excess oxygen to yield 23.118 g of carbon dioxide and 4.729 g of water. Find the empirical formula for the hydrocarbon.

CH

400

A .05000L sample of Ca(OH)2(aq) required .04678L of 0.04498 M HCl(aq) for complete neutralization. Find the molarity of the original Ca(OH)2(aq) solution.

0.02104 M

500

Which of the following lengths is the shortest:

a. 1.1 cm

b. 1.1 x 103 mm

c. 1.1 x 102 µm

d. 1.1 x 10-4 km

e. 0.11 m

f. 1.1x 106  nm

c. 1.1 x 102 µm

500

Name/give the formula for the following compounds:

Magnesium chloride hexahydrate

CoCO3∙8H2O

Phosphorous Acid

MgCl2∙6H2O

Cobalt (II) Carbonate Octahydrate

H3PO3

500

Consider the following reaction between niobium and iodine:

3 Nb(s) + 4 I2(s) → Nb3I8(s)

When 25.00 grams of niobium is mixed with 95.00 grams of iodine the percent yield for the product is 82.09%. What is the limiting reactant and how many moles of Nb3I8 are actually produced in the reaction?

Niobium (Nb) is the limiting reactant

0.0736 moles of Nb3I8 are actually produced

500

When 2.95 g of Na2CO∙ nH2O reacts with an excess of acid, 0.662 g of carbon dioxide is formed.  What is the value of n?  Round to the nearest whole number.

n = 5

500

What is the net ionic equation for the reaction that takes place when an aqueous solution of magnesium chloride is mixed with an aqueous solution of sodium hydroxide?

Mg2+ + 2OH- => Mg(OH)2

M
e
n
u