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The Purity of a Sample Containing Zinc and Weighing 0

Question 64

Multiple Choice

The purity of a sample containing zinc and weighing 0.312 g is determined by measuring the amount of hydrogen formed when the sample reacts with an excess of hydrochloric acid.The determination shows the sample to be 84.0% zinc.What amount of hydrogen (measured at STP) was obtained?


A) The purity of a sample containing zinc and weighing 0.312 g is determined by measuring the amount of hydrogen formed when the sample reacts with an excess of hydrochloric acid.The determination shows the sample to be 84.0% zinc.What amount of hydrogen (measured at STP) was obtained? A) L B) g C) mole D) molecules E) atoms L
B) The purity of a sample containing zinc and weighing 0.312 g is determined by measuring the amount of hydrogen formed when the sample reacts with an excess of hydrochloric acid.The determination shows the sample to be 84.0% zinc.What amount of hydrogen (measured at STP) was obtained? A) L B) g C) mole D) molecules E) atoms g
C) The purity of a sample containing zinc and weighing 0.312 g is determined by measuring the amount of hydrogen formed when the sample reacts with an excess of hydrochloric acid.The determination shows the sample to be 84.0% zinc.What amount of hydrogen (measured at STP) was obtained? A) L B) g C) mole D) molecules E) atoms mole
D) The purity of a sample containing zinc and weighing 0.312 g is determined by measuring the amount of hydrogen formed when the sample reacts with an excess of hydrochloric acid.The determination shows the sample to be 84.0% zinc.What amount of hydrogen (measured at STP) was obtained? A) L B) g C) mole D) molecules E) atoms molecules
E) The purity of a sample containing zinc and weighing 0.312 g is determined by measuring the amount of hydrogen formed when the sample reacts with an excess of hydrochloric acid.The determination shows the sample to be 84.0% zinc.What amount of hydrogen (measured at STP) was obtained? A) L B) g C) mole D) molecules E) atoms atoms

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