At a constant temperature and pressure, 4 balloons are each filled with a different gas. The mass of each gas is given below. Which balloon will have the largest volume?

All of the balloons will have the same volume.

A strong electrolyte is a compound that _____________.

dissolves completely in solution by dissociating into ions

dissolves partially in solution by dissociating into ions

does not dissolve in solution by dissociating into ions

is a soluble non-ionic compound

Write a balanced net ionic equation for the reaction of NiBr 2 (aq) with (NH 4 ) 2 S(aq).

Ni 2+ (aq) + S 2- (aq) → NiS(s)

NiBr 2 (aq) + (NH 4 )S(aq) → NiS(s) + 2NH 4 Br(s)

Ni 2+ (aq) + 2Br - (aq) + 2NH 4 + (aq) + S 2- (aq) → NiS(s) + 2NH 4 + (aq) + 2Br - (aq)

Ni 2+ (aq) + 2Br - (aq) + 2NH 4 + (aq) + S 2- (aq) → Ni 2+ (aq) + S 2- (aq) + 2NH 4 Br(s)

Which of the following represents the net ionic equation for the aqueous reaction of sodium carbonate and magnesium acetate?

CO 3 2- (aq) + Mg 2+ (aq) → MgCO 3 (s)

2Na + (aq) + Mg(CH 3 CO 2 ) 2 (aq) → 2NaCH 3 CO 2 (aq) + Mg 2+ (s)

Na 2 CO 3 (aq) + Mg 2+ (aq) → 2Na + (aq) + MgCO 3 (s)

2Na + (aq) + 2CH 3 CO 2 - (aq) → 2NaCH 3 CO 2 (aq)

A mass of 4.70g of an unknown liquid is heated to produce a gas. At a temperature of 450.K, the pressure was measured to be 8.06atm in a container with a volume of 250.mL. What is the most likely identity of the liquid?

hexane, C 6 H 14 (molar mass = 86.2g/mol)

water, H 2 O (molar mass = 18.0g/mol)

ethanol, C 2 H 5 OH (molar mass = 46.1g/mol)

xylene, C 8 H 10 (molar mass = 106.g/mol)

carbon tetrachloride, CCl 4 (molar mass = 153.8g/mol)

A sample of unknown gas with a mass of 4.0g occupies 5.6L at STP. What is the identity of the gas?

methane, CH 4 (molar mass = 16.0g/mol)

ethane, C 2 H 6 (molar mass = 30.0g/mol)

nitrogen, N 2 (molar mass = 28.0g/mol)

chlorine, Cl 2 (molar mass = 70.9g/mol)

carbon monoxide, CO (molar mass = 28.0g/mol)

For which pairs would a homogeneous solution be expected when equal volumes of liquids mixed? (i) CH 3 CH 2 CH 2 CH 2 CH 3 and CCl 4 (ii) CH 3 CH 2 CH 2 CH 2 CH 3 and CH 3 OH (iii) CH 3 CH 2 CH 2 CH 2 CH 3 and H 2 O

pair (i) would form a homogeneous solution

pair (ii) would form a homogeneous solution

pair (iii) would form a homogeneous solution

pairs (i) and (ii) would form a homogeneous solution

no pairs would form a homogeneous solution

Which of the following aqueous solutions has the highest molar concentration of [Na+]? assume each compound is fully dissolved in water

0.75M Na 3 PO 4 (sodium phosphate)

1.5M NaC 2 H 3 O 2 (sodium acetate)

1.0M Na 2 SO 4 (sodium sulfate)

all of these solutions have the same concentration of [Na+]

Solution-A has a concentration of 0.10M sugar and solution-B has a concentration of 0.20M sugar. If the two solutions are separated by a semipermeable membrane and initially have equal liquid levels, which of the following occurs?

The concentration of solution-B decreases.

The osmotic pressure of both solutions increase until the pressure is equal.

The volume of solution-A increases.

Sugar molecules move from solution-B into solution-A.

Write a balanced net ionic equation for the reaction of CdCl 2 (aq) with Na 2 S(aq).

Cd 2+ (aq) + S 2- (aq) → CdS(s)

Cd 2+ (aq) + 2Cl - (aq) + 2Na + (aq) + S 2- (aq) → CdS(s) + 2Na + (aq)

Cd 2+ (aq) + 2Cl - (aq) + 2Na + (aq) + S 2- (aq) → CdS(s) + 2NaCl(aq)

CdCl 2 (aq) + Na 2 S(aq) → CdS(aq) + 2NaCl(aq)

Exam 3 Review

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MULTIPLE CHOICE QUESTION

15 mins • 1 pt

A solution is prepared by dissolving 49.3g of NaCl in enough water to form 438mL of solution. Calculate the mass% of sodium chloride in the solution if the density of the solution is 1.06 g/mL

10.6% NaCl

11.3% NaCl

9.6% NaCl

12.7% NaCl

10.1% NaCl

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Suppose you have three beakers, labeled I-III, containing the following solutions:
I.) CuI₂(aq)
II.) KC₂H₃O₂(aq)
III.) CaSO₄(aq)

If a solution of lead(II) nitrate, Pb(NO₃)₂, is added to each beaker, in which will a precipitate form?

Only beaker (II) will contain a precipitate

All three beakers will contain precipitates

Only beaker (I) will contain a precipitate

Only beaker (III) will contain a precipitate

Beakers (I) and (III) will contain precipitates

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

How many grams of sodium azide, NaN₃ (molar mass = 65.02g/mol) are needed to react by the equation below in order to inflate a 66.0L air bag with N₂(g) at 294K and 0.989atm pressure?

2NaN₃(s) --> 2Na(s) + 3N₂(g)

95.1g

44.2g

117g

60.1g

176g

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

How many molecules of gas are present in a 0.500L container of N₂ at 25.0°C and 760. mmHg of pressure?

9.36 x 10²⁴ molecules

1.23 x 10²² molecules

1.23 x 10²³ molecules

7.55 x 10²¹ molecules

6.02 x 10²³ molecules

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

What is the molarity of a HCl solution, if 15.78mL of the acid is needed to completely neutralize 10.00mL of a 0.2000M NaOH solution?

hint: think dilution

0.03156M HCl

31.56M HCl

7.890M HCl

0.3156M HCl

0.1267M HCl

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

An excess of nitric acid is added to 2.50g of copper metal.

Cu(s) + 4HNO₃(aq) → Cu(NO₃)₂(aq) + 2NO₂(g) + 2H₂O(l)

What is the volume of NO₂ gas produced at a pressure of 1atm and temperature of 0°C (STP conditions)?

44.8L

0.881L

112L

1.76L

0.0787L

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Potassium nitrate, KNO₃, is added to toothpaste at 5.00% by mass to treat tooth pain. How much potassium nitrate is contained in a 124g tube of toothpaste?

6.20g

130.g

4.24g

5.26g

118g

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Exam 3 Review

A solution is prepared by dissolving 49.3g of NaCl in enough water to form 438mL of solution. Calculate the mass% of sodium chloride in the solution if the density of the solution is 1.06 g/mL

Suppose you have three beakers, labeled I-III, containing the following solutions:
I.) CuI₂(aq)
II.) KC₂H₃O₂(aq)
III.) CaSO₄(aq)

If a solution of lead(II) nitrate, Pb(NO₃)₂, is added to each beaker, in which will a precipitate form?

How many grams of sodium azide, NaN₃ (molar mass = 65.02g/mol) are needed to react by the equation below in order to inflate a 66.0L air bag with N₂(g) at 294K and 0.989atm pressure?

2NaN₃(s) --> 2Na(s) + 3N₂(g)

How many molecules of gas are present in a 0.500L container of N₂ at 25.0°C and 760. mmHg of pressure?

What is the molarity of a HCl solution, if 15.78mL of the acid is needed to completely neutralize 10.00mL of a 0.2000M NaOH solution?

hint: think dilution

An excess of nitric acid is added to 2.50g of copper metal.

Cu(s) + 4HNO₃(aq) → Cu(NO₃)₂(aq) + 2NO₂(g) + 2H₂O(l)

What is the volume of NO₂ gas produced at a pressure of 1atm and temperature of 0°C (STP conditions)?

Potassium nitrate, KNO₃, is added to toothpaste at 5.00% by mass to treat tooth pain. How much potassium nitrate is contained in a 124g tube of toothpaste?

At a constant temperature and pressure, 4 balloons are each filled with a different gas. The mass of each gas is given below. Which balloon will have the largest volume?

What mass of hydrogen fluoride gas is needed to react with 50.0mL of 0.027M thorium(IV) hydroxide, Th(OH)₄, according to the following equation?

Th(OH)₄(aq) + 4HF(g) → ThF₄(s) + 4H₂O(l)

What is the pressure of 3.20 mol of laughing gas, N₂O, in a 20.0L tank at 21°C?

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Discover more resources for Chemistry

Exam 3 Review

A solution is prepared by dissolving 49.3g of NaCl in enough water to form 438mL of solution. Calculate the mass% of sodium chloride in the solution if the density of the solution is 1.06 g/mL

Suppose you have three beakers, labeled I-III, containing the following solutions:I.) CuI2(aq)II.) KC2H3O2(aq)III.) CaSO4(aq)If a solution of lead(II) nitrate, Pb(NO3)2, is added to each beaker, in which will a precipitate form?

How many grams of sodium azide, NaN3 (molar mass = 65.02g/mol) are needed to react by the equation below in order to inflate a 66.0L air bag with N2(g) at 294K and 0.989atm pressure?2NaN3(s) --> 2Na(s) + 3N2(g)

How many molecules of gas are present in a 0.500L container of N2 at 25.0°C and 760. mmHg of pressure?

What is the molarity of a HCl solution, if 15.78mL of the acid is needed to completely neutralize 10.00mL of a 0.2000M NaOH solution?hint: think dilution

An excess of nitric acid is added to 2.50g of copper metal.Cu(s) + 4HNO3(aq) → Cu(NO3)2(aq) + 2NO2(g) + 2H2O(l)What is the volume of NO2 gas produced at a pressure of 1atm and temperature of 0°C (STP conditions)?

Potassium nitrate, KNO3, is added to toothpaste at 5.00% by mass to treat tooth pain. How much potassium nitrate is contained in a 124g tube of toothpaste?

At a constant temperature and pressure, 4 balloons are each filled with a different gas. The mass of each gas is given below. Which balloon will have the largest volume?

What mass of hydrogen fluoride gas is needed to react with 50.0mL of 0.027M thorium(IV) hydroxide, Th(OH)4, according to the following equation?Th(OH)4(aq) + 4HF(g) → ThF4(s) + 4H2O(l)

What is the pressure of 3.20 mol of laughing gas, N2O, in a 20.0L tank at 21°C?

Access all questions and much more by creating a free account

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Chemistry

Suppose you have three beakers, labeled I-III, containing the following solutions:
I.) CuI₂(aq)
II.) KC₂H₃O₂(aq)
III.) CaSO₄(aq)

If a solution of lead(II) nitrate, Pb(NO₃)₂, is added to each beaker, in which will a precipitate form?

How many grams of sodium azide, NaN₃ (molar mass = 65.02g/mol) are needed to react by the equation below in order to inflate a 66.0L air bag with N₂(g) at 294K and 0.989atm pressure?

2NaN₃(s) --> 2Na(s) + 3N₂(g)

How many molecules of gas are present in a 0.500L container of N₂ at 25.0°C and 760. mmHg of pressure?

What is the molarity of a HCl solution, if 15.78mL of the acid is needed to completely neutralize 10.00mL of a 0.2000M NaOH solution?

hint: think dilution

An excess of nitric acid is added to 2.50g of copper metal.

Cu(s) + 4HNO₃(aq) → Cu(NO₃)₂(aq) + 2NO₂(g) + 2H₂O(l)

What is the volume of NO₂ gas produced at a pressure of 1atm and temperature of 0°C (STP conditions)?

Potassium nitrate, KNO₃, is added to toothpaste at 5.00% by mass to treat tooth pain. How much potassium nitrate is contained in a 124g tube of toothpaste?

What mass of hydrogen fluoride gas is needed to react with 50.0mL of 0.027M thorium(IV) hydroxide, Th(OH)₄, according to the following equation?

Th(OH)₄(aq) + 4HF(g) → ThF₄(s) + 4H₂O(l)

What is the pressure of 3.20 mol of laughing gas, N₂O, in a 20.0L tank at 21°C?