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Chemistry 101 Final Exam Ivy Tech Questions And Correct Answers
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Chemistry 101 Final Exam Ivy Tech Questions And Correct Answers What is the mass percent of hydrogen in water? a: 5.60 b: 11.2 c: 33.3 d: 88.8 - ANSWER : b How many atoms are in 5.80 moles of He? a: 3.49 × 10^24 b: 6.02 × 10^23 c: 1.03 × 10^23 d: 4.00 - ANSWER : a What is the value of n when the empirical formula is C3H5 and the molecular mass is 205.4 g/mol? a: 10 b: 0.02 c: 140 d: 5 - ANSWER : d How many atoms are in 15.6 grams of silicon? a: 0.555 b: 3.34 × 10^23 c: 2.64 × 10^26 d: 438 - ANSWER : b What is the correct value for Avogadro's number? a: 6.022 × 10^2.3 b: 6.022 × 10^33 c: 6.022 × 10^23 d: 6.023 × 10^22 - ANSWER : c
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