Home / Questions / The correct formula for dinitrogen pentoxide is A NO5 B N2O4 C N2O5 D NO6 ...
The correct formula for dinitrogen pentoxide is:
A) NO_{5} B) N_{2}O_{4} C) N_{2}O_{5} D) NO_{6} E) N_{2}O_{6}
82. The correct formula for tetraphosphorus hexoxide is:
A) PO_{6} B) P_{5}O_{6} C) P_{4}O_{7} D) P_{4}O_{6} E) P_{5}O_{7}
83. Which of the following formula/name combinations is incorrect?
A)HF(aq) hydrofluoric acidD)HClO_{4}(aq) perchloric acid
B)HNO_{3}(aq) nitrous acidE)H_{3}PO_{3}(aq) phosphorous acid
C)H_{2}SO_{4}(aq) sulfuric acid
84. Which of the following formula/name combinations is incorrect?
A)HNO_{2}(aq) nitrous acidD)HClO_{2}(aq) hypochlorous acid
B)HBr(aq) hydrobromic acidE)H_{3}PO_{4}(aq) phosphoric acid
C)H_{2}SO_{3}(aq) sulfurous acid
85. Which of the following formula/name combinations is incorrect?
A)HI(aq) hydroiodic acidD)H_{2}SO_{3}(aq) sulfurous acid
B)H_{2}S(aq) hydrosulfuric acidE)H_{3}PO_{3}(aq) phosphoric acid
C)HClO_{3}(aq) chloric acid
86. Which set of ions is formed when (NH_{4})_{2}SO_{4} dissolves in water?
A)(NH_{4})_{2}^{2+ }+ SO_{4}^{2}^{?}D)2 N^{3}^{?} + 8 H^{+} + S^{+6} + 4 O^{2}^{?}
B)2 NH_{3} + 2 H^{+} + SO_{4}^{2}^{?}E)2 N^{3}^{??}+ 8 H^{+ }+ SO_{4}^{2}^{?}
C)2 NH_{4}^{+} + SO_{4}^{2}^{?}
87. Which set of ions is formed when Ca(NO_{3})_{2} dissolves in water?
A)Ca^{2+} + (NO_{3})_{2}^{2}^{?}D)Ca^{2+} + 2 NO_{3}^{?}
B)Ca + (NO_{3})_{2}E)Ca^{2+} + 2 N^{3- }+ 6 O^{2}^{?}
C)Ca^{+} + 2 NO_{3}^{?}
88. Which set of ions is formed when Cu_{2}SO_{4} dissolves in water?
A)2 Cu^{2+} + SO_{4}^{2}^{?}D)2 Cu^{+} + S^{+6} + 4 O^{2}^{?}
B)Cu^{2+} + SO_{4}^{2}^{?}E)Cu_{2}^{2+} + 2 SO_{4}^{2}^{?}
C)2 Cu^{+} + SO_{4}^{2}^{?}
89. Which set of formulas is correct for the compounds calcium hydrogen carbonate, magnesium chloride, and calcium sulfate, which can cause scale build-up in pipes?
A)CaHCO_{3}, MgCl_{2}, and Ca(SO_{4})_{2}D)Ca(HCO_{3})_{2}, MgCl_{2}, and CaSO_{4}
B)CaHCO_{3}, MgCl, and Ca(SO_{4})_{2}E)Ca(HCO_{3})_{2}, MgCl_{2}, and Ca_{2}SO_{4}
C)Ca(HCO_{3})_{2}, MgCl, and CaSO_{4}
90. Which set of formulas is correct for the compounds ammonia, nitric acid, and nitrous acid, respectively?
A)NH_{3}, HN, HNOD)NH_{3}, HNO_{3}, HNO_{2}
B)NH_{4}, HNO_{2}, HNO_{3}E)NH_{4}, HNO_{3}, HNO_{2}
C)NH_{3}, HNO_{2}, HNO_{3}
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