Tetraboric acid,H2B4O7,is prepared by heating boric acid,H3BO3 (a condensation reaction involving water loss).If 400.0 mmol H3BO3 are used,what mass (g)of H2O is formed,assuming quantitative stoichiometric conversion?

A) 5.77 B) 0.500 C) 0.320 D) 7.21 E) 9.01 A) 5.77 B) 0.500 C) 0.320 D) 7.21 E) 9.01

The oxidation number of N in NO3- is ________.

A) +1 B) +2 C) +3 D) +4 E) +5 A) +1 B) +2 C) +3 D) +4 E) +5

Consider the following xenon compounds: (i)XeCl2 (ii)XeCl4 (iii)XeO4 (iv)XeOCl4 (v)XeO3 Which of the compounds is(are)polar?

A) (i)only B) (iii)and (iv) C) (iv)and (v) D) (ii)and (iii) E) (iv)only A) (i)only B) (iii)and (iv) C) (iv)and (v) D) (ii)and (iii) E) (iv)only

What is the oxidation state of xenon in XeO2F2?

A) 0 B) +4 C) +8 D) +2 E) +6 A) 0 B) +4 C) +8 D) +2 E) +6

B2O3 is the anhydride of ________.

A) borous acid B) diborane C) tetraboric acid D) boric acid E) borax A) borous acid B) diborane C) tetraboric acid D) boric acid E) borax

Exam 22: Chemistry of the Nonmetals

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Tetraboric acid,H₂B₄O₇,is prepared by heating boric acid,H₃BO₃ (a condensation reaction involving water loss).If 400.0 mmol H₃BO₃ are used,what mass (g)of H₂O is formed,assuming quantitative stoichiometric conversion?

(Multiple Choice)

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Question 41

The oxidation number of N in NO₃^- is ________.

(Multiple Choice)

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Question 42

Hydrogen can form hydride ions.Elements in group ________ typically form ions with the same charge as the hydride ion.

(Multiple Choice)

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Question 43

Consider the following xenon compounds: (i)XeCl₂ (ii)XeCl₄ (iii)XeO₄ (iv)XeOCl₄ (v)XeO₃ Which of the compounds is(are)polar?

(Multiple Choice)

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Question 44

What is the formula of borax?

(Multiple Choice)

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Question 45

Most mined phosphate rock is ________.

(Multiple Choice)

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Question 46

What group 5A element is the least metallic?

(Short Answer)

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Question 47

The prefix thio- denotes ________.

(Multiple Choice)

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Question 48

Interhalogen compounds ________.

(Multiple Choice)

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Question 49

Which form of elemental sulfur is the most stable at room temperature?

(Multiple Choice)

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Question 50

What is an acetylide?

(Essay)

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Question 51

Silicones are ________.

(Multiple Choice)

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Question 52

What is the oxidation state of xenon in XeO₂F₂?

(Multiple Choice)

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Question 53

B₂O₃ is the anhydride of ________.

(Multiple Choice)

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Question 54

The oxidation numbers of sulfur in the sulfate ion,sulfite ion,sulfur trioxide,and hydrogen sulfide are ,,,and ,respectively.

(Multiple Choice)

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Question 55

Which noble gas is known to form a variety of binary compounds?

(Multiple Choice)

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Question 56

What is the coefficient of NO₂ when the following disproportionation reaction is balanced? NO₂ (g)+ H₂O (l)→ (aq)+ NO₃^- (aq)+ NO (g)

(Multiple Choice)

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Question 57

Soda-lime glass contains ________.

(Multiple Choice)

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Question 58

Hydrogen can have oxidation states of ________.

(Multiple Choice)

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Question 59

The principal combustion products of compounds containing carbon and hydrogen in the presence of excess O₂ are ________.

(Multiple Choice)

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Question 60

Showing 41 - 60 of 194

Exam 22: Chemistry of the Nonmetals

Tetraboric acid,H2B4O7,is prepared by heating boric acid,H3BO3 (a condensation reaction involving water loss).If 400.0 mmol H3BO3 are used,what mass (g)of H2O is formed,assuming quantitative stoichiometric conversion?

The oxidation number of N in NO3- is ________.

Hydrogen can form hydride ions.Elements in group ________ typically form ions with the same charge as the hydride ion.

Consider the following xenon compounds: (i)XeCl2 (ii)XeCl4 (iii)XeO4 (iv)XeOCl4 (v)XeO3 Which of the compounds is(are)polar?

What is the formula of borax?

Most mined phosphate rock is ________.

What group 5A element is the least metallic?

The prefix thio- denotes ________.

Interhalogen compounds ________.

Which form of elemental sulfur is the most stable at room temperature?

What is an acetylide?

Silicones are ________.

What is the oxidation state of xenon in XeO2F2?

B2O3 is the anhydride of ________.

The oxidation numbers of sulfur in the sulfate ion,sulfite ion,sulfur trioxide,and hydrogen sulfide are ________,________,________,and ________,respectively.

Which noble gas is known to form a variety of binary compounds?

What is the coefficient of NO2 when the following disproportionation reaction is balanced? NO2 (g)+ H2O (l)→ (aq)+ NO3- (aq)+ NO (g)

Soda-lime glass contains ________.

Hydrogen can have oxidation states of ________.

The principal combustion products of compounds containing carbon and hydrogen in the presence of excess O2 are ________.

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Chemical Reactions and Reaction Stoichiometry

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Tetraboric acid,H₂B₄O₇,is prepared by heating boric acid,H₃BO₃ (a condensation reaction involving water loss).If 400.0 mmol H₃BO₃ are used,what mass (g)of H₂O is formed,assuming quantitative stoichiometric conversion?

The oxidation number of N in NO₃^- is ________.

Consider the following xenon compounds: (i)XeCl₂ (ii)XeCl₄ (iii)XeO₄ (iv)XeOCl₄ (v)XeO₃ Which of the compounds is(are)polar?

What is the oxidation state of xenon in XeO₂F₂?

B₂O₃ is the anhydride of ________.

The oxidation numbers of sulfur in the sulfate ion,sulfite ion,sulfur trioxide,and hydrogen sulfide are ,,,and ,respectively.

What is the coefficient of NO₂ when the following disproportionation reaction is balanced? NO₂ (g)+ H₂O (l)→ (aq)+ NO₃^- (aq)+ NO (g)

The principal combustion products of compounds containing carbon and hydrogen in the presence of excess O₂ are ________.