Chemistry Exam 2

Which of the following is an ionic compound?
-LiCl
-NO2
-PCl3
-CF4
-SeBr2

LiCl

Which of the following is an ionic compound?
-SCl2
-Mg3(PO4)2
-Cl2O
-CH2O
-PF5

Mg3(PO4)2

Which of the following contains BOTH ionic and covalent bonds?
-CaI2
-COS
-Ca SO4
-SF6
-None of the above

CaSO4

Which of the following is a molecular compound?
-CuCl2
-N2O4
-NaNO3
-SrSO3
-RbBr

SrSO3

Which of the following is a molecular compound?
-NaCN
-LiOH
-SrI2
-ZnS
-P4O10

P4010

A covalent bond is best described as

the sharing of electrons between atoms

An ionic bond is best described as

the transfer from one atom to another

Which of the following is a molecular element?
-Kr
-Ag
-S
-Mg
-Ti

S

Which of the following is a molecular element?
-Mg
-Ar
-Xe
-I
-Li

I

Which of the following is an atomic element?
-Br
-H
-N
-O
-Mg

Mg

What is the empirical formula for C4H10O2?

C2H5O

What is the empirical formula for Hg2(NO3)2?

HgNO3

Write the formula for the compound formed between potassium and sulfur.

K2S

Write the formula for barium nitrite.

Ba(NO2)2

Write the formula for copper (II) sulfate pentahydrate.

CuSO4*5H2O

Write the formula for strontium nitride.

Sr3N2

Determine the name for TiCO3

titanium (II) carbonate

Write the name for Sn(SO4)2

tin (IV) sulfate

Write the name for Ca3(PO4)2

calcium phosphate

Determine the name for CoCl2*6H2O

cobalt (II) chloride hexahydrate

Determine the name for P4O10

tetraphophorus decaoxide

Determine the name for N2O5

dinitrogen pentaoxide

Determine the name for Cl2O

dichloro monoxide

Determine the name for H2CO3

carbonic acid

Determine the name for HClO3

chlorate acid

Determine the name for aqueous HBr

hydrobromic acid

Which of the following compounds is ethanal?

C2H5OH

Calculate the molar mass for Mg(ClO4)2

223.21 g/mol

Calculate the molar mass for Al(C2H3O2)3

204.13 g/mol

Calculate the molar mass of Ca3(PO4)2

310.18 g/mol

Write a balanced equation to show the reaction of sulfurous acid with lithium hydroxide to form water and lithium sulfite

H2S (aq) + 2 LiOH (aq) → 2 H2O (l) + Li2S (aq)

Write a balanced equation to show the reaction of gaseous ethane with gaseous oxygen to form carbon monoxide gas and water vapor

2 C2H6 (g) + 5 O2 → 4 CO (g) + 6 H2O (g)

Write a balanced equation to show the reaction of aqueaous aluminum acetate with aqeuous ammonium phosphate to form solid aluminum phosphate and aqueous ammonium acetate

Al(C2H3O2)3 (aq) + (NH4)3PO4 (aq) → ALPO3 (s) + 3 NH4CO2(aq)

How many N2O4 molecules are contained in 76.3 g N2O4? the molar mass of N2O4 is 92.02 g/mol.

4.99 x 1023 N2O4 molecules

How many C2H4 molecules are contained in 45.8 mg of C2H4? molar mass of C2H4 is 28.05

9.83 x 1020 C2H4 molecules

what is the mass of 6.89 x 1025 molecules of CO2? molar mass of CO2 is 44.01

5.04

What is the mass of 9.44 x 1024 molecules of NO2? molar mass of NO2 is 46.01

721

How many atoms of oxygen are contained in 47.6 g of Al2(CO3)3? the molar mass is 233.99

1.10 x 1024 O atoms

How many sodium ions are contained in 99.6 mg of Na2SO3? molar mass is 126.05

9.52 x 1020 sodium ions

How many moles of N2O3 contain 2.55 x 1024 oxygen atoms?

1.41 moles of N2O3

How many moles of PCl3 contain 3.68 x 1025 chlorine atom?

20.4 moles PCl3 (2.55 x 1024)/(6.022 x 1023)/3

How many moles of PCl3 contain 3.68 x chlorine atoms?

20.4 moles PCl3 (3.68 x 1025)/(6.022 x1023)/3

How many moles of C3H8 contain 4.95 x 1024 hydrogen atoms?

1.03 moles C3H8 (4.95 x 1024)/(6.022 x 1023)/8

How many millimoles of Ca(NO3)2 contains 4.78 x 1022 formula units of Ca(NO3)2? molar mass of 164

79.4 mmol Ca(NO3)2

How many moles of C3H8 contain 9.25 x 1024 molecules of C3H8?

15.4 moles C3H8

Calculate the mass percent composition of sulfur in Al(SO4)3

28.12% sulfur

Calculate the mass percent of lithium in Li3PO4

17.98% lithium

How many moles of NO are formed from 8.44 moles of NO2 in the balanced equation 3NO2 + H20→ 2 HNO3 + NO

2.81 (8.44)/3

What is NOT a strong electrolyte?

MgCO3

what is a strong electrolyte?

NH4NO3

Chemistry Exam 2 - Subjecto.com

Chemistry Exam 2

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Which of the following is an ionic compound?
-LiCl
-NO2
-PCl3
-CF4
-SeBr2

LiCl

Which of the following is an ionic compound?
-SCl2
-Mg3(PO4)2
-Cl2O
-CH2O
-PF5

Mg3(PO4)2

Which of the following contains BOTH ionic and covalent bonds?
-CaI2
-COS
-Ca SO4
-SF6
-None of the above

CaSO4

Which of the following is a molecular compound?
-CuCl2
-N2O4
-NaNO3
-SrSO3
-RbBr

SrSO3

Which of the following is a molecular compound?
-NaCN
-LiOH
-SrI2
-ZnS
-P4O10

P4010

A covalent bond is best described as

the sharing of electrons between atoms

An ionic bond is best described as

the transfer from one atom to another

Which of the following is a molecular element?
-Kr
-Ag
-S
-Mg
-Ti

S

Which of the following is a molecular element?
-Mg
-Ar
-Xe
-I
-Li

I

Which of the following is an atomic element?
-Br
-H
-N
-O
-Mg

Mg

What is the empirical formula for C4H10O2?

C2H5O

What is the empirical formula for Hg2(NO3)2?

HgNO3

Write the formula for the compound formed between potassium and sulfur.

K2S

Write the formula for barium nitrite.

Ba(NO2)2

Write the formula for copper (II) sulfate pentahydrate.

CuSO4*5H2O

Write the formula for strontium nitride.

Sr3N2

Determine the name for TiCO3

titanium (II) carbonate

Write the name for Sn(SO4)2

tin (IV) sulfate

Write the name for Ca3(PO4)2

calcium phosphate

Determine the name for CoCl2*6H2O

cobalt (II) chloride hexahydrate

Determine the name for P4O10

tetraphophorus decaoxide

Determine the name for N2O5

dinitrogen pentaoxide

Determine the name for Cl2O

dichloro monoxide

Determine the name for H2CO3

carbonic acid

Determine the name for HClO3

chlorate acid

Determine the name for aqueous HBr

hydrobromic acid

Which of the following compounds is ethanal?

C2H5OH

Calculate the molar mass for Mg(ClO4)2

223.21 g/mol

Calculate the molar mass for Al(C2H3O2)3

204.13 g/mol

Calculate the molar mass of Ca3(PO4)2

310.18 g/mol

Write a balanced equation to show the reaction of sulfurous acid with lithium hydroxide to form water and lithium sulfite

H2S (aq) + 2 LiOH (aq) → 2 H2O (l) + Li2S (aq)

Write a balanced equation to show the reaction of gaseous ethane with gaseous oxygen to form carbon monoxide gas and water vapor

2 C2H6 (g) + 5 O2 → 4 CO (g) + 6 H2O (g)

Write a balanced equation to show the reaction of aqueaous aluminum acetate with aqeuous ammonium phosphate to form solid aluminum phosphate and aqueous ammonium acetate

Al(C2H3O2)3 (aq) + (NH4)3PO4 (aq) → ALPO3 (s) + 3 NH4CO2(aq)

How many N2O4 molecules are contained in 76.3 g N2O4? the molar mass of N2O4 is 92.02 g/mol.

4.99 x 1023 N2O4 molecules

How many C2H4 molecules are contained in 45.8 mg of C2H4? molar mass of C2H4 is 28.05

9.83 x 1020 C2H4 molecules

what is the mass of 6.89 x 1025 molecules of CO2? molar mass of CO2 is 44.01

5.04

What is the mass of 9.44 x 1024 molecules of NO2? molar mass of NO2 is 46.01

721

How many atoms of oxygen are contained in 47.6 g of Al2(CO3)3? the molar mass is 233.99

1.10 x 1024 O atoms

How many sodium ions are contained in 99.6 mg of Na2SO3? molar mass is 126.05

9.52 x 1020 sodium ions

How many moles of N2O3 contain 2.55 x 1024 oxygen atoms?

1.41 moles of N2O3

How many moles of PCl3 contain 3.68 x 1025 chlorine atom?

20.4 moles PCl3 (2.55 x 1024)/(6.022 x 1023)/3

How many moles of PCl3 contain 3.68 x chlorine atoms?

20.4 moles PCl3 (3.68 x 1025)/(6.022 x1023)/3

How many moles of C3H8 contain 4.95 x 1024 hydrogen atoms?

1.03 moles C3H8 (4.95 x 1024)/(6.022 x 1023)/8

How many millimoles of Ca(NO3)2 contains 4.78 x 1022 formula units of Ca(NO3)2? molar mass of 164

79.4 mmol Ca(NO3)2

How many moles of C3H8 contain 9.25 x 1024 molecules of C3H8?

15.4 moles C3H8

Calculate the mass percent composition of sulfur in Al(SO4)3

28.12% sulfur

Calculate the mass percent of lithium in Li3PO4

17.98% lithium

How many moles of NO are formed from 8.44 moles of NO2 in the balanced equation 3NO2 + H20→ 2 HNO3 + NO

2.81 (8.44)/3

What is NOT a strong electrolyte?

MgCO3

what is a strong electrolyte?

NH4NO3

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