CHEM 1030 ACS Final Exam Study Guide
Questions and Correct Answers/ Latest
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T or F? Non-zero numbers ARE significant
Ans: True
T or F? Leading zeros ARE significant.
Ans: False. Leading zeros are NOT significant
T or F? Zeros between non-zero numbers ARE significant
Ans: True
T or F? Trailing zeros are NOT significant.
Ans: False. Trailing zeros ARE significant
How many significant figures are in 0.050?
Ans: 2
How many significant figures are in 1.0056
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Ans: 5
How many significant figures are in 0.00068
Ans: 2
How many significant figures are in 135.0
Ans: 4
What is the formal charge of Cobalt (Co)?
Ans: 2+ or 3+
What is the formal charge of Chromium (Cr)?
Ans: 3+ or 3+
What is the formal charge of Copper (Cu)?
Ans: 2+ or 1+
What is the formal charge of Iron (Fe)?
Ans: 3+ or 2+
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