How many grams of calcium phosphate are theoretically produced if we start with 3.40 moles of Ca(NO3)2 and 2.40 moles of Li3PO4? Reaction: 3Ca(NO3)2 + 2Li3PO4 → 6LiNO3 + Ca3(PO4)2

A) 310 B) 248 C) 1054 D) 351 E) not enough information A) 310 B) 248 C) 1054 D) 351 E) not enough information

How many grams of water are needed to react with 27.2 grams of Li2O? Given: Li2O + H2O → 2 LiOH

A) 0.910 B) 16.4 C) 1.51 D) 38.94 E) none of the above A) 0.910 B) 16.4 C) 1.51 D) 38.94 E) none of the above

Many metals react with halogens to give metal halides.For example, 2 Al (s)+ 3 Cl2(g)→ 2 AlCl3 (s) If you begin with 13.5 g of aluminum:

A) you will need 23.6 g Cl2 for complete reaction and will produce 66.7 g of AlCl3. B) you will need 53.2 g Cl2 for complete reaction and will produce 66.7 g of AlCl3. C) you will need 26.6 g Cl2 for complete reaction and will produce 49.0 g of AlCl3. D) you will need 11.8 g Cl2 for complete reaction and will produce 49.0 g of AlCl3. E) none of the above A) you will need 23.6 g Cl2 for complete reaction and will produce 66.7 g of AlCl3. B) you will need 53.2 g Cl2 for complete reaction and will produce 66.7 g of AlCl3. C) you will need 26.6 g Cl2 for complete reaction and will produce 49.0 g of AlCl3. D) you will need 11.8 g Cl2 for complete reaction and will produce 49.0 g of AlCl3. E) none of the above

Diatomic N2 can react with diatomic H2 to form ammonia (NH3).The balanced chemical equation is: If 6 moles of H2 totally reacted with more than enough N2,how many moles of ammonia would be expected to form?

A) 2 moles B) 3 moles C) 4 moles D) 6 moles E) not enough information A) 2 moles B) 3 moles C) 4 moles D) 6 moles E) not enough information

Given that 4 NH3 + 5 O2 → 4 NO + 6 H2O,if 3.00 mol NH3 were made to react with excess of oxygen gas,the amount of H2O formed would be:

A) 2.00 mol. B) 3.00 mol. C) 4.50 mol. D) 6.00 mol. E) none of the above A) 2.00 mol. B) 3.00 mol. C) 4.50 mol. D) 6.00 mol. E) none of the above

Exam 8: Quantities in Chemical Reactions

If it takes 2 cups of milk and 1 cup of cocoa mix to make three servings of hot chocolate,and you only have 1 cup of each,then you cannot make any hot chocolate.

(True/False)

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Question 81

Which ingredient is the limiting reactant if you have 5 cups of flour,9 eggs and 3 tbs of oil? Given: 2 cups flour + 3 eggs + 1 tbs oil → 4 waffles

(Multiple Choice)

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Question 82

How many grams of calcium phosphate are theoretically produced if we start with 3.40 moles of Ca(NO₃)₂ and 2.40 moles of Li₃PO₄? Reaction: 3Ca(NO₃)₂+ 2Li₃PO₄→ 6LiNO₃ + Ca₃(PO₄)₂

(Multiple Choice)

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Question 83

How many grams of water are needed to react with 27.2 grams of Li₂O? Given: Li₂O + H₂O → 2 LiOH

(Multiple Choice)

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Question 84

How many moles of sodium metal are needed to make 3.6 moles of sodium chloride? Given the reaction: 2Na + Cl₂ → 2NaCl

(Multiple Choice)

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Question 85

If the theoretical yield of a reaction is 144 grams and the actual yield of the reaction is 72 grams,the percent yield of the reaction is 200%.

(True/False)

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Question 86

Iron metal reacts with oxygen to produce iron(III)oxide.If you have 12.0 moles of iron for complete reaction,you need:

(Multiple Choice)

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Question 87

Many metals react with halogens to give metal halides.For example, 2 Al (s)+ 3 Cl₂(g)→ 2 AlCl₃(s) If you begin with 13.5 g of aluminum:

(Multiple Choice)

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Question 88

Consider the following generic chemical equation: 2W + 3X → 3Y + Z When 5 units of W and 6 units of X are allowed to react,the limiting reactant would be:

(Multiple Choice)

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Question 89

Greenhouse gases affect the temperature of the earth by blocking sunlight from reaching earth.

(True/False)

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Question 90

One of the advantages of burning fossil fuels is that it produces O₂ for humans to breathe.

(True/False)

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Question 91

Diatomic N₂ can react with diatomic H₂ to form ammonia (NH₃).The balanced chemical equation is: If 6 moles of H₂ totally reacted with more than enough N₂,how many moles of ammonia would be expected to form?

(Multiple Choice)

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Question 92

The average global temperature depends on all factors EXCEPT what?

(Multiple Choice)

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Question 93

If the theoretical yield of a reaction is 42.0 grams of product and the percent yield is 75%.How many grams were actually produced?

(Multiple Choice)

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Question 94

Given the recipe: 2 cups flour + 1 egg + 3 oz blueberries → 4 muffins If you have 5 cups of flour,3 eggs and plenty of blueberries,the limiting reactant is the eggs.

(True/False)

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Question 95

Which of the following is TRUE?

(Multiple Choice)

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Question 96

Given that 4 NH₃ + 5 O₂ → 4 NO + 6 H₂O,if 3.00 mol NH₃were made to react with excess of oxygen gas,the amount of H₂O formed would be:

(Multiple Choice)

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Question 97

How many moles of chlorine gas are needed to make 0.6 moles of sodium chloride? Given the reaction: 2Na + Cl₂ → 2NaCl

(Multiple Choice)

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Question 98

Stoichiometry is a chemist's version of following a recipe.

(True/False)

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Question 99

Thermal energy flows into the reaction and out of the surroundings in an endothermic reaction.

(True/False)

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Question 100

Showing 81 - 100 of 115

If it takes 2 cups of milk and 1 cup of cocoa mix to make three servings of hot chocolate,and you only have 1 cup of each,then you cannot make any hot chocolate.

Which ingredient is the limiting reactant if you have 5 cups of flour,9 eggs and 3 tbs of oil? Given: 2 cups flour + 3 eggs + 1 tbs oil → 4 waffles

How many grams of calcium phosphate are theoretically produced if we start with 3.40 moles of Ca(NO₃)₂ and 2.40 moles of Li₃PO₄? Reaction: 3Ca(NO₃)₂+ 2Li₃PO₄→ 6LiNO₃ + Ca₃(PO₄)₂

How many grams of water are needed to react with 27.2 grams of Li₂O? Given: Li₂O + H₂O → 2 LiOH

How many moles of sodium metal are needed to make 3.6 moles of sodium chloride? Given the reaction: 2Na + Cl₂ → 2NaCl

If the theoretical yield of a reaction is 144 grams and the actual yield of the reaction is 72 grams,the percent yield of the reaction is 200%.

Iron metal reacts with oxygen to produce iron(III)oxide.If you have 12.0 moles of iron for complete reaction,you need:

Many metals react with halogens to give metal halides.For example, 2 Al (s)+ 3 Cl₂(g)→ 2 AlCl₃(s) If you begin with 13.5 g of aluminum:

Consider the following generic chemical equation: 2W + 3X → 3Y + Z When 5 units of W and 6 units of X are allowed to react,the limiting reactant would be:

Greenhouse gases affect the temperature of the earth by blocking sunlight from reaching earth.

One of the advantages of burning fossil fuels is that it produces O₂ for humans to breathe.

Diatomic N₂ can react with diatomic H₂ to form ammonia (NH₃).The balanced chemical equation is: If 6 moles of H₂ totally reacted with more than enough N₂,how many moles of ammonia would be expected to form?

The average global temperature depends on all factors EXCEPT what?

If the theoretical yield of a reaction is 42.0 grams of product and the percent yield is 75%.How many grams were actually produced?

Given the recipe: 2 cups flour + 1 egg + 3 oz blueberries → 4 muffins If you have 5 cups of flour,3 eggs and plenty of blueberries,the limiting reactant is the eggs.

Which of the following is TRUE?

Given that 4 NH₃ + 5 O₂ → 4 NO + 6 H₂O,if 3.00 mol NH₃were made to react with excess of oxygen gas,the amount of H₂O formed would be:

How many moles of chlorine gas are needed to make 0.6 moles of sodium chloride? Given the reaction: 2Na + Cl₂ → 2NaCl

Stoichiometry is a chemist's version of following a recipe.

Thermal energy flows into the reaction and out of the surroundings in an endothermic reaction.

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Exam 8: Quantities in Chemical Reactions

If it takes 2 cups of milk and 1 cup of cocoa mix to make three servings of hot chocolate,and you only have 1 cup of each,then you cannot make any hot chocolate.

Which ingredient is the limiting reactant if you have 5 cups of flour,9 eggs and 3 tbs of oil? Given: 2 cups flour + 3 eggs + 1 tbs oil → 4 waffles

How many grams of calcium phosphate are theoretically produced if we start with 3.40 moles of Ca(NO3)2 and 2.40 moles of Li3PO4? Reaction: 3Ca(NO3)2 + 2Li3PO4 → 6LiNO3 + Ca3(PO4)2

How many grams of water are needed to react with 27.2 grams of Li2O? Given: Li2O + H2O → 2 LiOH

How many moles of sodium metal are needed to make 3.6 moles of sodium chloride? Given the reaction: 2Na + Cl2 → 2NaCl

If the theoretical yield of a reaction is 144 grams and the actual yield of the reaction is 72 grams,the percent yield of the reaction is 200%.

Iron metal reacts with oxygen to produce iron(III)oxide.If you have 12.0 moles of iron for complete reaction,you need:

Many metals react with halogens to give metal halides.For example, 2 Al (s)+ 3 Cl2(g)→ 2 AlCl3 (s) If you begin with 13.5 g of aluminum:

Consider the following generic chemical equation: 2W + 3X → 3Y + Z When 5 units of W and 6 units of X are allowed to react,the limiting reactant would be:

Greenhouse gases affect the temperature of the earth by blocking sunlight from reaching earth.

One of the advantages of burning fossil fuels is that it produces O2 for humans to breathe.

Diatomic N2 can react with diatomic H2 to form ammonia (NH3).The balanced chemical equation is: If 6 moles of H2 totally reacted with more than enough N2,how many moles of ammonia would be expected to form?

The average global temperature depends on all factors EXCEPT what?

If the theoretical yield of a reaction is 42.0 grams of product and the percent yield is 75%.How many grams were actually produced?

Given the recipe: 2 cups flour + 1 egg + 3 oz blueberries → 4 muffins If you have 5 cups of flour,3 eggs and plenty of blueberries,the limiting reactant is the eggs.

Which of the following is TRUE?

Given that 4 NH3 + 5 O2 → 4 NO + 6 H2O,if 3.00 mol NH3 were made to react with excess of oxygen gas,the amount of H2O formed would be:

How many moles of chlorine gas are needed to make 0.6 moles of sodium chloride? Given the reaction: 2Na + Cl2 → 2NaCl

Stoichiometry is a chemist's version of following a recipe.

Thermal energy flows into the reaction and out of the surroundings in an endothermic reaction.

The Chemical World

Measurement and Problem Solving

Matter and Energy

Atoms and Elements

Molecules and Compounds

Chemical Composition

Chemical Reactions

Electrons in Atoms and the Periodic Table

Chemical Bonding

Gases

Liquids, solids, and Intermolecular Forces

Solutions

Acids and Bases

Chemical Equilibrium

Oxidation and Reduction

Radioactivity and Nuclear Chemistry

Organic Chemistry

Biochemistry

Filters

How many grams of calcium phosphate are theoretically produced if we start with 3.40 moles of Ca(NO₃)₂ and 2.40 moles of Li₃PO₄? Reaction: 3Ca(NO₃)₂+ 2Li₃PO₄→ 6LiNO₃ + Ca₃(PO₄)₂

How many grams of water are needed to react with 27.2 grams of Li₂O? Given: Li₂O + H₂O → 2 LiOH

How many moles of sodium metal are needed to make 3.6 moles of sodium chloride? Given the reaction: 2Na + Cl₂ → 2NaCl

Many metals react with halogens to give metal halides.For example, 2 Al (s)+ 3 Cl₂(g)→ 2 AlCl₃(s) If you begin with 13.5 g of aluminum:

One of the advantages of burning fossil fuels is that it produces O₂ for humans to breathe.

Diatomic N₂ can react with diatomic H₂ to form ammonia (NH₃).The balanced chemical equation is: If 6 moles of H₂ totally reacted with more than enough N₂,how many moles of ammonia would be expected to form?

Given that 4 NH₃ + 5 O₂ → 4 NO + 6 H₂O,if 3.00 mol NH₃were made to react with excess of oxygen gas,the amount of H₂O formed would be:

How many moles of chlorine gas are needed to make 0.6 moles of sodium chloride? Given the reaction: 2Na + Cl₂ → 2NaCl