The analysis of 0.246 g of organic compound. gives 0.656 g CO2, 0.134 g H2O, and 1.86 × 10-3 mol N2 gas. What would be the empirical formula of this organic compound?

A) C3H3N B) C4H4N C) C2H2N2 D) C2H2N E) C3H3N2 A) C3H3N B) C4H4N C) C2H2N2 D) C2H2N E) C3H3N2

The explosive, trinitrotoluene, TNT, C6H3N3O6, has the same proportion of:

A) N to H atoms as does NH3 B) H to O atoms as does H2O C) N to O atoms as does NO2 D) C to H atoms as does C6H6 E) C to O atoms as does CO2 A) N to H atoms as does NH3 B) H to O atoms as does H2O C) N to O atoms as does NO2 D) C to H atoms as does C6H6 E) C to O atoms as does CO2

How many grams of K are found in 1.00 × 102 g of K2Cr2O7?

A) 18.3 g B) 36.5 g C) 53.2 g D) 13.3 g E) 26.6 g A) 18.3 g B) 36.5 g C) 53.2 g D) 13.3 g E) 26.6 g

What is the correct name for the following organic structure? CH3CH(OH)CH2CH2CH2CH3

A) pentyl alcohol B) 5-hexanol C) 2-hexanol D) 1-methylpentanol E) 2-methylpentanol A) pentyl alcohol B) 5-hexanol C) 2-hexanol D) 1-methylpentanol E) 2-methylpentanol

A compound has the following percentage composition, by weight: 22.0% Cu, 12.9% Fe, 16.6% C, 19.4% N, and 29.1% H2O. Write a plausible (empirical) formula for this hydrate.

A) CuFe(CN)4 ∙ 4 H2O B) CuF(CN)4 ∙ 5 H2O C) Cu3Fe2(CN)12 ∙ 14 H2O D) CuF(CN)4 E) Cu3Fe2(CN)12 A) CuFe(CN)4 ∙ 4 H2O B) CuF(CN)4 ∙ 5 H2O C) Cu3Fe2(CN)12 ∙ 14 H2O D) CuF(CN)4 E) Cu3Fe2(CN)12

Exam 3: Chemical Compounds

White phosphorus, P4, spontaneously bursts into flame in oxygen. If 6.500 g of white phosphorus reacts with oxygen to form 11.54 g of a phosphorus oxide, what is the empirical formula of this oxide?

(Multiple Choice)

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Question 61

The analysis of 0.246 g of organic compound. gives 0.656 g CO₂, 0.134 g H₂O, and 1.86 × 10^-3mol N₂ gas. What would be the empirical formula of this organic compound?

(Multiple Choice)

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Question 62

Choose the INCORRECT name formula combination.

(Multiple Choice)

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Question 63

The simplest formula of a substance is found to be CH₂O, and its approximate molecular weight is found by experiment to be 93. What is the exact molecular weight of this substance in grams/mole?

(Multiple Choice)

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Question 64

The explosive, trinitrotoluene, TNT, C₆H₃N₃O₆, has the same proportion of:

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Question 65

The structural formula is the simplest formula.

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Question 66

How many grams of K are found in 1.00 × 10² g of K₂Cr₂O₇?

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Question 67

In which compound does carbon have an oxidation state of zero?

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Question 68

4.72 g of a compound of carbon, hydrogen, and silver was burned in an atmosphere of oxygen, yielding 7.95 g of CO₂, 1.02 g of H₂O, and 3.02 g of a mixture of silver and silver oxide. Because the production of this mixture yielded an indeterminate value for the amount of silver, another sample of the compound weighing 8.12 g was reacted with a solution of NaCl, yielding 5.57 g of AgCl. What is the empirical formula of the compound?

(Multiple Choice)

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Question 69

Aspartame, C₁₄H₁₈N₂O₅, a low-calorie sweetener, is about 200 times sweeter than sugar. How many molecules of aspartame are there in a one-gram packet of sweetener containing 36 mg aspartame?

(Multiple Choice)

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Question 70

What is the correct name for the following organic structure? CH₃CH(OH)CH₂CH₂CH₂CH₃

(Multiple Choice)

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Question 71

A compound is found to have the following percent composition by mass: 38.7% K, 13.8% N, 47.5% O. What is the empirical formula of the compound?

(Multiple Choice)

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Question 72

Maprotiline, a tetracyclic drug prescribed for the treatment of depression, has the following mass composition: C 86.56%, H 8.35%, and the rest is nitrogen.. The empirical formula of maprotiline is ________.

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Question 73

The material Styrofoam is made by blowing a gas into the polymer polystyrene made from styrene. Styrene has the percent composition of C 92.26% and H 7.74% and 1.41 × 10²² molecules weigh 2.44 grams. What is the molecular formula for styrene?

(Multiple Choice)

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Question 74

The oxidation state of iodine in orthoparaperiodic acid, H5IO6, is ________.

(Multiple Choice)

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Question 75

Which of the following substances contains the greatest number of atoms?

(Multiple Choice)

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Question 76

Which of the following is(are) isomer(s) of organic compound with formula C5H12O?

(Multiple Choice)

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Question 77

Which of the following can be one of the isomers of a compound with molecular formula C₄H₁₀?

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Question 78

A compound has the following percentage composition, by weight: 22.0% Cu, 12.9% Fe, 16.6% C, 19.4% N, and 29.1% H₂O. Write a plausible (empirical) formula for this hydrate.

(Multiple Choice)

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Question 79

Combustion analysis of a 22.0 mg sample of the painkiller morphine produced 13.2 mg of water. What is the percentage by mass of hydrogen in morphine?

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Question 80

Showing 61 - 80 of 100

Exam 3: Chemical Compounds

White phosphorus, P4, spontaneously bursts into flame in oxygen. If 6.500 g of white phosphorus reacts with oxygen to form 11.54 g of a phosphorus oxide, what is the empirical formula of this oxide?

The analysis of 0.246 g of organic compound. gives 0.656 g CO2, 0.134 g H2O, and 1.86 × 10-3 mol N2 gas. What would be the empirical formula of this organic compound?

Choose the INCORRECT name formula combination.

The simplest formula of a substance is found to be CH2O, and its approximate molecular weight is found by experiment to be 93. What is the exact molecular weight of this substance in grams/mole?

The explosive, trinitrotoluene, TNT, C6H3N3O6, has the same proportion of:

The structural formula is the simplest formula.

How many grams of K are found in 1.00 × 102 g of K2Cr2O7?

In which compound does carbon have an oxidation state of zero?

Aspartame, C14H18N2O5, a low-calorie sweetener, is about 200 times sweeter than sugar. How many molecules of aspartame are there in a one-gram packet of sweetener containing 36 mg aspartame?

What is the correct name for the following organic structure? CH3CH(OH)CH2CH2CH2CH3

A compound is found to have the following percent composition by mass: 38.7% K, 13.8% N, 47.5% O. What is the empirical formula of the compound?

Maprotiline, a tetracyclic drug prescribed for the treatment of depression, has the following mass composition: C 86.56%, H 8.35%, and the rest is nitrogen.. The empirical formula of maprotiline is ________.

The material Styrofoam is made by blowing a gas into the polymer polystyrene made from styrene. Styrene has the percent composition of C 92.26% and H 7.74% and 1.41 × 1022 molecules weigh 2.44 grams. What is the molecular formula for styrene?

The oxidation state of iodine in orthoparaperiodic acid, H5IO6, is ________.

Which of the following substances contains the greatest number of atoms?

Which of the following is(are) isomer(s) of organic compound with formula C5H12O?

Which of the following can be one of the isomers of a compound with molecular formula C4H10?

A compound has the following percentage composition, by weight: 22.0% Cu, 12.9% Fe, 16.6% C, 19.4% N, and 29.1% H2O. Write a plausible (empirical) formula for this hydrate.

Combustion analysis of a 22.0 mg sample of the painkiller morphine produced 13.2 mg of water. What is the percentage by mass of hydrogen in morphine?

Matter - Its Properties and Measurement

Atoms and the Atomic Theory

Chemical Reactions

Introduction to Reactions in Aqueous Solutions

Gases

Thermochemistry

Electrons in Atoms

The Periodic Table and Some Atomic Properties

Chemical Bonding I: Basic Concepts

Chemical Bonding II: Additional Aspects

Intermolecular Forces: Liquids and Solids

Solutions and Their Physical Properties

Chemical Kinetics

Principles of Chemical Equilibrium

Acids and Bases

Additional Aspects of Acid-Base Equilibria

Solubility and Complex-Ion Equilibria

Spontaneous Change: Entropy and Free Energy

Electrochemistry

Main Group Elements I: Groups 1, 2, 13, and 14

Main Group Elements II: Groups 18, 17, 16, 15, and Hydrogen

The Transition Elements

Complex Ions and Coordination Compounds

Nuclear Chemistry 1-41

Structures of Organic Compounds

Reactions of Organic Compounds

Chemistry of the Living State

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The analysis of 0.246 g of organic compound. gives 0.656 g CO₂, 0.134 g H₂O, and 1.86 × 10^-3mol N₂ gas. What would be the empirical formula of this organic compound?

The simplest formula of a substance is found to be CH₂O, and its approximate molecular weight is found by experiment to be 93. What is the exact molecular weight of this substance in grams/mole?

The explosive, trinitrotoluene, TNT, C₆H₃N₃O₆, has the same proportion of:

How many grams of K are found in 1.00 × 10² g of K₂Cr₂O₇?

Aspartame, C₁₄H₁₈N₂O₅, a low-calorie sweetener, is about 200 times sweeter than sugar. How many molecules of aspartame are there in a one-gram packet of sweetener containing 36 mg aspartame?

What is the correct name for the following organic structure? CH₃CH(OH)CH₂CH₂CH₂CH₃

The material Styrofoam is made by blowing a gas into the polymer polystyrene made from styrene. Styrene has the percent composition of C 92.26% and H 7.74% and 1.41 × 10²² molecules weigh 2.44 grams. What is the molecular formula for styrene?

Which of the following can be one of the isomers of a compound with molecular formula C₄H₁₀?

A compound has the following percentage composition, by weight: 22.0% Cu, 12.9% Fe, 16.6% C, 19.4% N, and 29.1% H₂O. Write a plausible (empirical) formula for this hydrate.