Sulfur dioxide gas reacts with oxygen gas and water according to the chemical reaction below.When 4.5 g of SO2 are mixed with excess O2 and H2O, how many grams of H2SO4 are produced? 2SO2(g)+ O2(g)+ 2H2O(l)$\rarr$2H2SO4(l)

A) 4.5 g B) 440 g C) 9.0 g D) 14 g E) 6.9 g A) 4.5 g B) 440 g C) 9.0 g D) 14 g E) 6.9 g

A compound with an empirical formula of C2H4Br has a molar mass of 215.90 g/mol.What is the molecular formula?

A) C4H8Br2 B) C2H4Br C) CHBr D) C6H12Br3 E) C4H8Br A) C4H8Br2 B) C2H4Br C) CHBr D) C6H12Br3 E) C4H8Br

Which of the following CO2 samples contains the greatest number of moles of CO2?

A) 3.5 moles CO2 B) 3.21 x 1023 CO2 molecules C) 4.50 x 1022 CO2 molecules D) 5.60 g CO2 E) 3.19 x 101 g CO2 A) 3.5 moles CO2 B) 3.21 x 1023 CO2 molecules C) 4.50 x 1022 CO2 molecules D) 5.60 g CO2 E) 3.19 x 101 g CO2

The first step in the Ostwald process for producing nitric acid is 4NH3(g)+ 5O2(g)$\rarr$ 4NO(g)+ 6H2O(g). If the reaction of 150.g of ammonia with 150.g of oxygen gas yields 87.g of nitric oxide (NO), what is the percent yield of this reaction?

A) 33% B) 49% C) 62% D) 77% E) 100% A) 33% B) 49% C) 62% D) 77% E) 100%

How many fluorine atoms are there in 65 g of CF4?

A) 0.74 atoms B) 3.0 atoms C) 4.5 × 1023 atoms D) 1.8 × 1024 atoms E) 2.4 × 1023 atoms A) 0.74 atoms B) 3.0 atoms C) 4.5 × 1023 atoms D) 1.8 × 1024 atoms E) 2.4 × 1023 atoms

The molecular formula of aspirin is C9H8O4.How many aspirin molecules are present in one 500-milligram tablet?

A) 2.77 molecules B) 2.77 × 10-3 molecules C) 1.67 × 1024 molecules D) 1.67 × 1021 molecules E) None of these is correct. A) 2.77 molecules B) 2.77 × 10-3 molecules C) 1.67 × 1024 molecules D) 1.67 × 1021 molecules E) None of these is correct.

Which of the following NH3 samples contains the greatest number of moles of NH3?

A) 0.356 moles NH3 B) 4.65 x 1023 NH3 molecules C) 6.78 x 1022 NH3 molecules D) 8.90g NH3 E) 6.78 x 101g NH3 A) 0.356 moles NH3 B) 4.65 x 1023 NH3 molecules C) 6.78 x 1022 NH3 molecules D) 8.90g NH3 E) 6.78 x 101g NH3

Exam 3: Mass Relationships in Chemical Reactions

Sulfur dioxide gas reacts with oxygen gas and water according to the chemical reaction below.When 4.5 g of SO₂are mixed with excess O₂ and H₂O, how many grams of H₂SO₄ are produced? 2SO₂(g)+ O₂(g)+ 2H₂O(l) $\rarr$ 2H₂SO₄(l)

(Multiple Choice)

4.8/5

(46)

Question 41

Calculate the mass of 4.50 moles of chlorine gas, Cl₂.

(Multiple Choice)

4.9/5

(32)

Question 42

An atom of bromine has a mass about four times greater than that of an atom of neon.How many grams of neon will contain the same number of atoms as 1,000 g of bromine?

(Multiple Choice)

4.7/5

(35)

Question 43

Balance the following chemical equation: C + Fe₂O₃ $\rarr$ Fe + CO

(Essay)

4.8/5

(37)

Question 44

Calculate the number of moles of xenon in 12.0 g of xenon.

(Multiple Choice)

4.9/5

(41)

Question 45

Pressurized metal gas cylinders are generally used to store commonly used gases in the laboratory.At times it can be easier to chemically prepare occasionally used gases..For example, nitrogen monoxide, NO(g), can be prepared in the lab using the following chemical reaction: 3Cu(s)+ 8HNO₃(aq) $\rarr$ 2NO(g)+ 3Cu(NO₃)₂(aq)+ 4H₂O(l) If 5.0 g of copper metal was added to an aqueous solution containing 2.5 moles of HNO₃, how many moles of NO(g)would be produced, assuming a 100% yield.

(Short Answer)

4.8/5

(38)

Question 46

A compound with an empirical formula of C₂H₄Br has a molar mass of 215.90 g/mol.What is the molecular formula?

(Multiple Choice)

4.7/5

(39)

Question 47

Which of the following CO₂ samples contains the greatest number of moles of CO₂?

(Multiple Choice)

4.9/5

(39)

Question 48

Aluminum hydroxide reacts with nitric acid to form aluminum nitrate and water.What mass of water can be formed by the reaction of 15.0 g of aluminum hydroxide with excess nitric acid?

(Multiple Choice)

4.9/5

(37)

Question 49

The first step in the Ostwald process for producing nitric acid is 4NH₃(g)+ 5O₂(g) $\rarr$ 4NO(g)+ 6H₂O(g). If the reaction of 150.g of ammonia with 150.g of oxygen gas yields 87.g of nitric oxide (NO), what is the percent yield of this reaction?

(Multiple Choice)

4.9/5

(42)

Question 50

Which one of the following is an example of a balanced chemical reaction?

(Multiple Choice)

4.9/5

(36)

Question 51

A mass spectrometer works by ionizing atoms or molecules, and then accelerating them through oppositely charged plates.The mass is obtained by

(Multiple Choice)

4.8/5

(28)

Question 52

Calculate the mass of excess reagent remaining at the end of the reaction in which 90.0 g of SO₂ are mixed with 100.0 g of O₂. 2SO₂ + O₂ $\rarr$ 2SO₃

(Multiple Choice)

4.8/5

(39)

Question 53

How many fluorine atoms are there in 65 g of CF₄?

(Multiple Choice)

4.8/5

(37)

Question 54

If 0.66 mole of a substance has a mass of 99 g, what is the molecular mass of the substance?

(Short Answer)

4.7/5

(36)

Question 55

Nickel has a lower atomic mass than cobalt, even though it has a higher atomic number.One possible explanation is that one of the average atomic masses was miscalculated.In the case of cobalt, there is only one isotope: 100% ⁵⁹Co at a mass of 58.9332 amu.For nickel, however, there are five isotopes as given in the table. A.Using the data in the table, calculate the average atomic mass for nickel. B.Is the atomic mass for nickel in your periodic table correct? C.Regardless of your answer to part B, how else could you explain the observation that the atomic mass of nickel is less than the mass of cobalt, even though it has the higher atomic number?

(Essay)

4.8/5

(28)

Question 56

The molecular formula of aspirin is C₉H₈O₄.How many aspirin molecules are present in one 500-milligram tablet?

(Multiple Choice)

4.8/5

(36)

Question 57

Which of the following NH₃ samples contains the greatest number of moles of NH₃?

(Multiple Choice)

4.8/5

(37)

Question 58

The reaction of 44.1 g of Cr₂O₃ with 35.0 g of Al produced 25.6 g of Cr.What is the percent yield for this reaction? 2Al + Cr₂O₃ $\rarr$ Al₂O₃ + 2Cr

(Multiple Choice)

4.8/5

(32)

Question 59

A compound with a percent composition by mass of 87.5% N and 12.5% H was recently discovered.What is the empirical formula for this compound?

(Short Answer)

4.8/5

(32)

Question 60

Showing 41 - 60 of 194

Exam 3: Mass Relationships in Chemical Reactions

Sulfur dioxide gas reacts with oxygen gas and water according to the chemical reaction below.When 4.5 g of SO2 are mixed with excess O2 and H2O, how many grams of H2SO4 are produced? 2SO2(g)+ O2(g)+ 2H2O(l) →\rarr→ 2H2SO4(l)

Calculate the mass of 4.50 moles of chlorine gas, Cl2.

An atom of bromine has a mass about four times greater than that of an atom of neon.How many grams of neon will contain the same number of atoms as 1,000 g of bromine?

Balance the following chemical equation: C + Fe2O3 →\rarr→ Fe + CO

Calculate the number of moles of xenon in 12.0 g of xenon.

A compound with an empirical formula of C2H4Br has a molar mass of 215.90 g/mol.What is the molecular formula?

Which of the following CO2 samples contains the greatest number of moles of CO2?

Aluminum hydroxide reacts with nitric acid to form aluminum nitrate and water.What mass of water can be formed by the reaction of 15.0 g of aluminum hydroxide with excess nitric acid?

The first step in the Ostwald process for producing nitric acid is 4NH3(g)+ 5O2(g) →\rarr→ 4NO(g)+ 6H2O(g). If the reaction of 150.g of ammonia with 150.g of oxygen gas yields 87.g of nitric oxide (NO), what is the percent yield of this reaction?

Which one of the following is an example of a balanced chemical reaction?

A mass spectrometer works by ionizing atoms or molecules, and then accelerating them through oppositely charged plates.The mass is obtained by

Calculate the mass of excess reagent remaining at the end of the reaction in which 90.0 g of SO2 are mixed with 100.0 g of O2. 2SO2 + O2 →\rarr→ 2SO3

How many fluorine atoms are there in 65 g of CF4?

If 0.66 mole of a substance has a mass of 99 g, what is the molecular mass of the substance?

The molecular formula of aspirin is C9H8O4.How many aspirin molecules are present in one 500-milligram tablet?

Which of the following NH3 samples contains the greatest number of moles of NH3?

The reaction of 44.1 g of Cr2O3 with 35.0 g of Al produced 25.6 g of Cr.What is the percent yield for this reaction? 2Al + Cr2O3 →\rarr→ Al2O3 + 2Cr

A compound with a percent composition by mass of 87.5% N and 12.5% H was recently discovered.What is the empirical formula for this compound?

Chemistry: the Study of Change

Atoms, Molecules, and Ions

Reactions in Aqueous Solutions

Gases

Thermochemistry

Quantum Theory and the Electronic Structure of Atoms

Periodic Relationships Among the Elements

Chemical Bonding I: Basic Concepts

Chemical Bonding Ii: Molecular Geometry and Hybridization of Atomic Orbitals

Intermolecular Forces and Liquids and Solids

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Entropy Free Energy and Equilibrium

Electrochemistry

Nuclear Chemistry

Chemistry in the Atmosphere

Metallurgy and the Chemistry of Metals

Nonmetallic Elements and Their Compounds

Transition Metal Chemistry and Coordination Compounds

Organic Chemistry

Synthetic and Natural Organic Polymers

Filters

Sulfur dioxide gas reacts with oxygen gas and water according to the chemical reaction below.When 4.5 g of SO₂are mixed with excess O₂ and H₂O, how many grams of H₂SO₄ are produced? 2SO₂(g)+ O₂(g)+ 2H₂O(l) $\rarr$ 2H₂SO₄(l)

Calculate the mass of 4.50 moles of chlorine gas, Cl₂.

Balance the following chemical equation: C + Fe₂O₃ $\rarr$ Fe + CO

A compound with an empirical formula of C₂H₄Br has a molar mass of 215.90 g/mol.What is the molecular formula?

Which of the following CO₂ samples contains the greatest number of moles of CO₂?

The first step in the Ostwald process for producing nitric acid is 4NH₃(g)+ 5O₂(g) $\rarr$ 4NO(g)+ 6H₂O(g). If the reaction of 150.g of ammonia with 150.g of oxygen gas yields 87.g of nitric oxide (NO), what is the percent yield of this reaction?

Calculate the mass of excess reagent remaining at the end of the reaction in which 90.0 g of SO₂ are mixed with 100.0 g of O₂. 2SO₂ + O₂ $\rarr$ 2SO₃

How many fluorine atoms are there in 65 g of CF₄?

The molecular formula of aspirin is C₉H₈O₄.How many aspirin molecules are present in one 500-milligram tablet?

Which of the following NH₃ samples contains the greatest number of moles of NH₃?

The reaction of 44.1 g of Cr₂O₃ with 35.0 g of Al produced 25.6 g of Cr.What is the percent yield for this reaction? 2Al + Cr₂O₃ $\rarr$ Al₂O₃ + 2Cr