Phosphine,an extremely poisonous and highly reactive gas,reacts with oxygen gas to form tetraphosphorus decaoxide and water. PH3(g)+ O2(g)→ P4O10(s)+ H2O(g)[unbalanced] Calculate the mass of P4O10(s)formed when 225 g of PH3 reacts with excess oxygen.

A) 1880 g B) 940.g C) 900.g D) 470.g E) 56.3 g A) 1880 g B) 940.g C) 900.g D) 470.g E) 56.3 g

Calculate the formula mass of (NH4)3AsO4.

A) 417.80 amu B) 193.05 amu C) 165.02 amu D) 156.96 amu E) 108.96 amu A) 417.80 amu B) 193.05 amu C) 165.02 amu D) 156.96 amu E) 108.96 amu

Ammonia reacts with diatomic oxygen to form nitric oxide and water vapor as follows: 4NH3 + 5O2 → __________4NO + 6H2O What is the maximum amount of water that may be produced if 40.0 g NH3 and 50.0 g O2 are mixed and allowed to react?

A) 1.56mol B) 1.88 mol C) 3.52 mol D) 3.91 mol E) 2.35 mol A) 1.56mol B) 1.88 mol C) 3.52 mol D) 3.91 mol E) 2.35 mol

What is the mass,in grams,of one arsenic atom? (NA = 6.022 × 1023 mol-1)

A) 5.48 × 10-23 g B) 33.0 g C) 74.9 g D) 1.24 × 10-22 g E) 8.04 × 1021 g A) 5.48 × 10-23 g B) 33.0 g C) 74.9 g D) 1.24 × 10-22 g E) 8.04 × 1021 g

Balance the following equation: Ca3(PO4)2(s)+ SiO2(s)+ C(s)→ CaSiO3(s)+ CO(g)+ P4(s)

A) Ca3(PO4)2(s)+ 3SiO2(s)+ 8C(s)→ 3CaSiO3(s)+ 8CO(g)+ P4(s) B) Ca3(PO4)2(s)+ 3SiO2(s)+ 14C(s)→ 3CaSiO3(s)+ 14CO(g)+ P4(s) C) Ca3(PO4)2(s)+ 3SiO2(s)+ 8C(s)→ 3CaSiO3(s)+ 8CO(g)+ 2P4(s) D) 2Ca3(PO4)2(s)+ 6SiO2(s)+ 10C(s)→ 6CaSiO3(s)+ 10CO(g)+ P4(s) E) 2Ca3(PO4)2(s)+ 6SiO2(s)+ 10C(s)→ 6CaSiO3(s)+ 10CO(g)+ 4P4(s) A) Ca3(PO4)2(s)+ 3SiO2(s)+ 8C(s)→ 3CaSiO3(s)+ 8CO(g)+ P4(s) B) Ca3(PO4)2(s)+ 3SiO2(s)+ 14C(s)→ 3CaSiO3(s)+ 14CO(g)+ P4(s) C) Ca3(PO4)2(s)+ 3SiO2(s)+ 8C(s)→ 3CaSiO3(s)+ 8CO(g)+ 2P4(s) D) 2Ca3(PO4)2(s)+ 6SiO2(s)+ 10C(s)→ 6CaSiO3(s)+ 10CO(g)+ P4(s) E) 2Ca3(PO4)2(s)+ 6SiO2(s)+ 10C(s)→ 6CaSiO3(s)+ 10CO(g)+ 4P4(s)

Calculate the molar mass of Ca(BO2)2·6H2O.

A) 273.87 g/mol B) 233.80 g/mol C) 183.79 g/mol D) 174.89 g/mol E) 143.71 g/mol A) 273.87 g/mol B) 233.80 g/mol C) 183.79 g/mol D) 174.89 g/mol E) 143.71 g/mol

Exam 3: Stoichiometry Ratios of Combination

Phosphine,an extremely poisonous and highly reactive gas,reacts with oxygen gas to form tetraphosphorus decaoxide and water. PH₃(g)+ O₂(g)→ P₄O₁₀(s)+ H₂O(g)[unbalanced] Calculate the mass of P₄O₁₀(s)formed when 225 g of PH₃ reacts with excess oxygen.

(Multiple Choice)

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Question 101

What mass of nitrogen gas is required to react completely with excess hydrogen gas to produce 13.6 g of ammonia?

(Multiple Choice)

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Question 102

Calculate the formula mass of (NH₄)₃AsO₄.

(Multiple Choice)

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Question 103

Once the following equation is balanced with the smallest set of whole number coefficients,what is the sum of the coefficients? (Don't forget to include coefficients of one.) _ Cr + _ H₂SO₄ → _ Cr₂(SO₄)₃ + _H₂

(Multiple Choice)

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Question 104

What is the name given to the quantitative relationship between the substances that are consumed and produced in a chemical reaction?

(Multiple Choice)

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Question 105

Phosphorus pentachloride,a white solid that has a pungent,unpleasant odor,is used as a catalyst for certain organic reactions.Calculate the number of moles in 38.7 g of phosphorus pentachloride.

(Multiple Choice)

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Question 106

What mass of excess reactant remains at the end of the reaction if 90.0 g of SO2 are mixed with 100.0 g of O2? 2SO₂ + O₂ → 2SO₃

(Multiple Choice)

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Question 107

Suppose white atoms (W)and black atoms (B)react according to the following balanced chemical equation. 2W + B → BW₂ If the initial reaction mixture is prepared as follows,what will the final reaction mixture be once the reaction is complete?

(Multiple Choice)

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Question 108

Ammonia reacts with diatomic oxygen to form nitric oxide and water vapor as follows: 4NH₃ + 5O₂ → __________4NO + 6H₂O What is the maximum amount of water that may be produced if 40.0 g NH₃ and 50.0 g O₂ are mixed and allowed to react?

(Multiple Choice)

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Question 109

What is the mass,in grams,of one arsenic atom? (N_A = 6.022 × 10²³ mol^-1)

(Multiple Choice)

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Question 110

Once the following equation is balanced with the smallest set of whole number coefficients,what is the sum of the coefficients? (Don't forget to include coefficients of one.) _ Al + _ H₂SO₄ → _ Al₂(SO₄)₃ + _ H₂

(Multiple Choice)

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Question 111

The empirical formula of C₆H₆ is CH.

(True/False)

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Question 112

Calculate the formula mass of rubidium carbonate,Rb₂CO₃.

(Multiple Choice)

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Question 113

Which could represent the reaction mixture after the complete combustion of acetaldehyde,CH₃CHO?

(Multiple Choice)

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Question 114

The ______________ is the one component that is completely consumed during a chemical reaction.

(Short Answer)

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Question 115

Balance the following equation: Ca₃(PO₄)₂(s)+ SiO₂(s)+ C(s)→ CaSiO₃(s)+ CO(g)+ P₄(s)

(Multiple Choice)

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Question 116

Calculate the molar mass of Ca(BO₂)₂·6H₂O.

(Multiple Choice)

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Question 117

Determine the number of ammonia molecules in 4.85 g of ammonia.(N_A = 6.022 × 10²³ mol^-1)

(Multiple Choice)

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Question 118

What mass of nitrogen gas is required to react completely with 2.79 g of hydrogen gas to produce ammonia?

(Multiple Choice)

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Question 119

If 31.3 g of manganese(II)chloride,48.3 g of chlorine gas,and 25.7 g of water react to produce manganese(IV)oxide and hydrochloric acid,what is the limiting reactant and what mass of hydrochloric acid is produced?

(Multiple Choice)

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Question 120

Showing 101 - 120 of 131

Exam 3: Stoichiometry Ratios of Combination

Phosphine,an extremely poisonous and highly reactive gas,reacts with oxygen gas to form tetraphosphorus decaoxide and water. PH3(g)+ O2(g)→ P4O10(s)+ H2O(g)[unbalanced] Calculate the mass of P4O10(s)formed when 225 g of PH3 reacts with excess oxygen.

What mass of nitrogen gas is required to react completely with excess hydrogen gas to produce 13.6 g of ammonia?

Calculate the formula mass of (NH4)3AsO4.

Once the following equation is balanced with the smallest set of whole number coefficients,what is the sum of the coefficients? (Don't forget to include coefficients of one.) ___ Cr + ___ H2SO4 → ___ Cr2(SO4)3 + ___H2

What is the name given to the quantitative relationship between the substances that are consumed and produced in a chemical reaction?

Phosphorus pentachloride,a white solid that has a pungent,unpleasant odor,is used as a catalyst for certain organic reactions.Calculate the number of moles in 38.7 g of phosphorus pentachloride.

What mass of excess reactant remains at the end of the reaction if 90.0 g of SO2 are mixed with 100.0 g of O2? 2SO2 + O2 → 2SO3

Suppose white atoms (W)and black atoms (B)react according to the following balanced chemical equation. 2W + B → BW2 If the initial reaction mixture is prepared as follows,what will the final reaction mixture be once the reaction is complete?

Ammonia reacts with diatomic oxygen to form nitric oxide and water vapor as follows: 4NH3 + 5O2 → __________4NO + 6H2O What is the maximum amount of water that may be produced if 40.0 g NH3 and 50.0 g O2 are mixed and allowed to react?

What is the mass,in grams,of one arsenic atom? (NA = 6.022 × 1023 mol-1)

Once the following equation is balanced with the smallest set of whole number coefficients,what is the sum of the coefficients? (Don't forget to include coefficients of one.) ___ Al + ___ H2SO4 → ___ Al2(SO4)3 + ___ H2

The empirical formula of C6H6 is CH.

Calculate the formula mass of rubidium carbonate,Rb2CO3.

Which could represent the reaction mixture after the complete combustion of acetaldehyde,CH3CHO?

The ______________ is the one component that is completely consumed during a chemical reaction.

Balance the following equation: Ca3(PO4)2(s)+ SiO2(s)+ C(s)→ CaSiO3(s)+ CO(g)+ P4(s)

Calculate the molar mass of Ca(BO2)2·6H2O.

Determine the number of ammonia molecules in 4.85 g of ammonia.(NA = 6.022 × 1023 mol-1)

What mass of nitrogen gas is required to react completely with 2.79 g of hydrogen gas to produce ammonia?

If 31.3 g of manganese(II)chloride,48.3 g of chlorine gas,and 25.7 g of water react to produce manganese(IV)oxide and hydrochloric acid,what is the limiting reactant and what mass of hydrochloric acid is produced?

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Phosphine,an extremely poisonous and highly reactive gas,reacts with oxygen gas to form tetraphosphorus decaoxide and water. PH₃(g)+ O₂(g)→ P₄O₁₀(s)+ H₂O(g)[unbalanced] Calculate the mass of P₄O₁₀(s)formed when 225 g of PH₃ reacts with excess oxygen.

Calculate the formula mass of (NH₄)₃AsO₄.

Once the following equation is balanced with the smallest set of whole number coefficients,what is the sum of the coefficients? (Don't forget to include coefficients of one.) _ Cr + _ H₂SO₄ → _ Cr₂(SO₄)₃ + _H₂

What mass of excess reactant remains at the end of the reaction if 90.0 g of SO2 are mixed with 100.0 g of O2? 2SO₂ + O₂ → 2SO₃

Suppose white atoms (W)and black atoms (B)react according to the following balanced chemical equation. 2W + B → BW₂ If the initial reaction mixture is prepared as follows,what will the final reaction mixture be once the reaction is complete?

Ammonia reacts with diatomic oxygen to form nitric oxide and water vapor as follows: 4NH₃ + 5O₂ → __________4NO + 6H₂O What is the maximum amount of water that may be produced if 40.0 g NH₃ and 50.0 g O₂ are mixed and allowed to react?

What is the mass,in grams,of one arsenic atom? (N_A = 6.022 × 10²³ mol^-1)

Once the following equation is balanced with the smallest set of whole number coefficients,what is the sum of the coefficients? (Don't forget to include coefficients of one.) _ Al + _ H₂SO₄ → _ Al₂(SO₄)₃ + _ H₂

The empirical formula of C₆H₆ is CH.

Calculate the formula mass of rubidium carbonate,Rb₂CO₃.

Which could represent the reaction mixture after the complete combustion of acetaldehyde,CH₃CHO?

Balance the following equation: Ca₃(PO₄)₂(s)+ SiO₂(s)+ C(s)→ CaSiO₃(s)+ CO(g)+ P₄(s)

Calculate the molar mass of Ca(BO₂)₂·6H₂O.

Determine the number of ammonia molecules in 4.85 g of ammonia.(N_A = 6.022 × 10²³ mol^-1)