Question 1

How many Hydrogen atoms are in (NH₄)₂CrO₄?

Accepted Answer

8

Answer

1

Answer

2

Answer

4

Question 2

What is the formula mass of silicon dioxide (SiO₂)?

Accepted Answer

60.1 g/mol

Answer

30.0 g/mol

Answer

44.1 g/mol

Answer

7193.6 g/mol

Question 3

A substance that is 3 on the pH scale would be a(n):

Accepted Answer

Acid

Answer

Base

Answer

Solute

Answer

Neutral

Question 4

Bases are located where on the pH scale?

Accepted Answer

above 7

Answer

number 7 is a base

Answer

any number can be a base

Answer

below 7

Question 5

The substance that dissolves the solute in a solution is the ____.

Accepted Answer

Solvent

Answer

Solution

Answer

Solute

Answer

Hydrogen Ions

Question 6

A substance that is a 10 on the pH scale would be a(n) ____.

Accepted Answer

Base

Answer

Neutral

Answer

Acid

Answer

Hydrogen Ions

Question 7

An ion is

Accepted Answer

An atom that has gained or lost an electron

Answer

An atom that has only gained electrons

Answer

An atom where the number of protons=electrons

Answer

An atom that has only lost electrons

Question 8

Cations

Accepted Answer

Lose electrons, has an overall positive charge

Answer

Lose electrons, has an overall negative charge

Answer

Gain electrons, has an overall positive charge

Answer

Gain electrons, has an overall negative charge

Question 9

Anions

Accepted Answer

Gain electrons, has an overall negative charge

Answer

Gain electrons, has an overall positive charge

Answer

Lose electrons, has an overall positive charge

Answer

Lose electrons, has an overall negative charge

Question 10

Balance the following reaction ___P₄+___O₂ → ___P₂O₃

Accepted Answer

1 P₄+ 3 O₂ → 2 P₂O₃

Answer

P₄+1 O₂ → 2 P₂O₃

Answer

1 P₄+ 2 O₂ → 3 P₂O₃

Answer

3 P₄+1 O₂ → 2 P₂O₃

Question 11

Balance the following reaction ___AlBr₃ + ___K₂SO₄ → ___KBr + ___Al₂(SO₄)₃

Accepted Answer

2 AlBr₃ + 3 K₂SO₄ → 6 KBr + 1 Al₂(SO₄)₃

Answer

6 AlBr₃ + 1 K₂SO₄ → 6 KBr + 1 Al₂(SO₄)₃

Answer

1 AlBr₃ + 1 K₂SO₄ → 2 KBr + 3 Al₂(SO₄)₃

Answer

2 AlBr₃ + 3 K₂SO₄ → 1 KBr + 2 Al₂(SO₄)₃

Question 12

If a solution has a [H⁺] of 9.3x10^-11, what is the pH?

Accepted Answer

10

Answer

4

Answer

3.5

Answer

8.2

Question 13

If the pH of a solution is 5.6 the pOH is

Accepted Answer

8.4

Answer

5.6

Answer

6.5

Answer

12.4

Question 14

If the [OH^-] of a solution is 2.7 x 10^-4 mol/L the pOH of the solution is

Accepted Answer

3.56

Answer

4.43

Answer

1

Answer

10.44

Question 15

if the [H⁺] of a solution is 8.4 x 10^-3mol/L the pOH of the solution will be

Accepted Answer

11.92

Answer

12.98

Answer

1.02

Answer

2.08

Question 16

Is AgCl (silver chloride) soluble or insoluble? (pic)

Accepted Answer

Insoluble

Answer

Soluble

Answer

Neither

Answer

Both

Question 17

Is Zinc hydroxide, Zn(OH)₂ soluble or insoluble?

Accepted Answer

Insoluble

Answer

Both

Answer

Soluble

Answer

Neither

Question 18

Is KBr (potassium bromide) soluble or insoluble?

Accepted Answer

Soluble

Answer

Neither

Answer

Insoluble

Answer

Both

Question 19

Is NaC₂H₃O₂ (sodium acetate) soluble or insoluble

Accepted Answer

Soluble

Answer

Neither

Answer

Insoluble

Answer

Both

Question 20

Predict the product(s) of this reaction Pb(NO₃)₂ + KI →

Accepted Answer

PbI₂(solid) + KNO₃(aqueous)

Answer

No Reaction

Answer

PbI₂(aqueous) + KNO₃(solid)

Answer

PbK(solid) + INO₃(aqueous)

Question 21

Predict the products of the following equation. MgCl₂ + AgNO₃ ---->

Accepted Answer

AgCl(solid) + Mg(NO₃)₂(aqueous)

Answer

No Reaction

Answer

AgCl(solid) + MgNO₃(aqueous)

Answer

AgCl(aqueous) + Mg(NO₃)₂(solid)

Question 22

Count the atoms C₃H₅(NO₃)₃

Accepted Answer

C = 3, H = 5, N = 3, O = 9

Answer

C = 3, H = 5, N = 1, O = 9

Answer

C = 9, H = 15, N = 1, O = 3

Answer

C = 9, H = 15, N = 3, O = 9

Question 23

In a reaction Na + Cl ----> NaCl, If there is 5g of Na and the product NaCl has 9g.  How many grams of Cl are there?

Accepted Answer

4

Answer

9

Answer

5

Answer

18

Question 24

What is the molarity of a solution which contains 22.41 grams of NaCl in 50.0 mL of solution?

Accepted Answer

7.67 M

Answer

4.8 M

Answer

0.488 M

Answer

.00767 M

Question 25

How many L would you need to make a 1 M solution if you have 6 Mol of Sodium Hydroxide?

Accepted Answer

6

Answer

3

Answer

4

Answer

2

Question 26

What is a limiting reactant?

Accepted Answer

the reactant that determines how much product can be made

Answer

the reactant that is in excess

Answer

the amount of reactants that react with each other

Answer

the product that you can make the most of

Question 27

Use the equation Al + Cl₂ ---> AlCl₃. If you have 400 aluminum atoms and 900 chlorine atoms, identify the limiting reactant.

Accepted Answer

Cl

Answer

Al

Answer

Neither

Question 28

This solution would be considered

Accepted Answer

Super Saturated

Answer

Unsaturated

Answer

Undefined

Answer

Saturated

Question 29

This graph represents a(n) ___ solution

Accepted Answer

Unsaturated

Answer

Super Saturated

Answer

Saturated

Answer

Undefined

Question 30

The solubility graph below shows the amounts of four substances that will dissolve in 100 grams of water at various water temperatures. Which substance has 80 grams of solute dissolved at 50 ºC?

Accepted Answer

Potassium Bromide

Answer

Lithium Hydroxide

Answer

Ammonium Chloride

Answer

Potassium Chloride

Question 31

A solution of potassium chlorate, KClO3, has 20 grams of salt dissolved in 100 grams of water at 70 ºC. Approximately how many more grams of salt can be added until the solution becomes saturated?

Accepted Answer

10 g

Answer

30 g

Answer

20 g

Answer

80 g

Question 32

How many mLs of 10.8M HCl are required to make 100.0 mL of 3.00M acid?

Accepted Answer

27.8 mL

Answer

278 mL

Answer

100 mL

Answer

2.8 mL

Question 33

125.0 mL of 2.00 M calcium hydroxide solution is diluted to a concentration of 1.50 M. How many mL of water was added to the original volume?

Accepted Answer

42 mL

Answer

167 mL

Answer

93.8 mL

Answer

2 mL

Question 34

In an endothermic reaction, energy is _________.

Accepted Answer

Absorbed

Answer

Released

Answer

Neither

Question 35

____ reactions usually feel cold.

Accepted Answer

Endothermic

Answer

Exothermic

Answer

Released

Answer

Absorbed

Question 36

_____ reactions usually feel hot.

Accepted Answer

Exothermic

Answer

Endothermic

Answer

Absorbed

Answer

Released

Question 37

In an exothermic reaction, energy is _________.

Accepted Answer

Released

Answer

Neither

Answer

Absorbed

Question 38

Which of the following best describes the energy transformations that occur when a flashlight that runs on batteries is turned on?

Accepted Answer

chemical → electrical → light

Answer

electrical → light → chemical

Answer

light → electrical → chemical

Answer

chemical → light → electrical

Question 39

Some students observing a classroom device being used, noticed the below energy transformations.  Electrical → Mechanical → Sound   Which device were the students most likely observing?

Accepted Answer

A pencil sharpener plugged into a wall outlet.

Answer

A working flashlight used to light up a dark corner.

Answer

A projector displaying a diagram on the screen.

Answer

A triple beam balance measuring an object’s mass.

Question 40

Non-polar molecules __________ their electrons

Accepted Answer

Share Equally

Answer

Steal

Answer

Do not react

Answer

Share Unequally

Question 41

Polar molecules __________ their electrons

Accepted Answer

Share Unequally

Answer

Do not react

Answer

Steal

Answer

Share Equally

Question 42

Ionic Bonds __________ electrons

Accepted Answer

Steal

Answer

Do not react

Answer

Share Equally

Answer

Share Unequally

Question 43

As pressure increases, temperature _______________.

Accepted Answer

Increases

Answer

Does not change

Answer

Decreases

Question 44

As pressure increases, volume _______________.

Accepted Answer

Decreases

Answer

Does not change

Answer

Increases

Question 45

As volume increases, temperature _______________.

Accepted Answer

Increases

Answer

Decreases

Answer

Does not change

Question 46

Calculate the volume that a 0.323-mol sample of a gas will occupy at 265 K and a pressure of 0.900 atm. R=.082

Accepted Answer

7.79

Answer

4.36

Answer

0.79

Answer

4.63

Question 47

Determine the temperature required for 0.0470 mol of gas to fill a balloon to 1.20 L under 0.998 atm pressure.  R = 0.082

Accepted Answer

311 K

Answer

300 K

Answer

200 K

Answer

107 K

Question 48

A balloon is filled with 35.0 L of helium in the morning when the temperature is 20 ºC. By noon the temperature has risen to 45 ºC. What is the new volume of the balloon?

Accepted Answer

38 L

Answer

78 L

Answer

56.9 L

Answer

35 L

Question 49

There are 135 L of gas in a container at a temperature of 260 ºC. If the gas was cooled until the volume decreased to 75 L, what would the temperature of the gas be?

Accepted Answer

23 ºC

Answer

15 ºC

Answer

85 ºC

Answer

58 ºC

Question 50

The initial volume of a gas at a pressure of 3.2 atm is 2.9 L. What will the volume be if the pressure is increased to 4.0 atm?

Accepted Answer

2.32 L

Answer

2 L

Answer

1.8 L

Answer

3.3 L

Question 51

If a solution has a [H⁺] of 9.3x10^-11, what is the pH?

Accepted Answer

10

Answer

8.2

Answer

3.5

Answer

4

Question 52

If the pH of a solution is 5.6 the pOH is

Accepted Answer

8.4

Answer

12.4

Answer

6.5

Answer

5.6

Question 53

You have a gas that has a pressure of 2 ATM and a volume of 10L. What would be the new volume if the pressure was changed to 1 ATM?

Accepted Answer

20

Answer

10

Answer

1

Answer

5

Question 54

Determine the initial temperature of a random gas when the initial volume is 2.2 L and it is cooled to 88K with a volume of 0.85 L.

Accepted Answer

228 K

Answer

0.029 K

Answer

34 K

Answer

0.021 K

Question 55

What is the molar mass of Mg(NO₃)₂

Accepted Answer

148 g/mol

Answer

89 g/mol

Answer

54 g/mol

Answer

134 g/mol

Question 56

A 75 L container holds 62 moles of gas. How many moles could a 50 L container hold?

Accepted Answer

41 moles

Answer

23 moles

Answer

78 moles

Answer

93 moles

Question 57

A constant volume of oxygen is heated from 100 ºC to 185 ºC.  The initial pressure is 4.1 atm.  What is the final pressure?

Accepted Answer

5 atm

Answer

2.6 atm

Answer

7.58 atm

Answer

10.2 atm

Question 58

A 25 L of NH3 gas at 10 ºC is heated at a constant pressure until it fills a volume of 50 L.  What is the new temperature in ºC?

Accepted Answer

293 ºC

Answer

125 ºC

Answer

273 ºC

Answer

566 ºC

Question 59

What do you call a solution that contains less than the maximum amount of solute that is capable of being dissolved?

Accepted Answer

unsaturated solution

Answer

Undefined

Answer

Saturated

Answer

Super Saturated

Question 60

Which of the following best describes a supersaturated solution?

Accepted Answer

a solution that contains more than the maximum amount of solute that is capable of being dissolved.

Answer

a solution that contains less than the maximum amount of solute that is capable of being dissolved.

Answer

Undefined

Answer

a solution that contains the maximum amount of solute that is capable of being dissolved

Question 61

________ is a solution in which no more solute can dissolve.

Accepted Answer

Saturated

Answer

unsaturated solution

Answer

Undefined

Answer

Super Saturated

Question 62

This graph represents a(n) ___ solution

Accepted Answer

Saturated

Answer

unsaturated solution

Answer

Undefined

Answer

Super Saturated

Question 63

Water is the universal ____.

Accepted Answer

Solvent

Answer

Suspension

Answer

Solute

Answer

Solution

Question 64

The substance being dissolved in a solution.

Accepted Answer

Solute

Answer

Suspension

Answer

Solvent

Answer

Solution

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