1. Calculate the answer to the following problem and report your answer with the correct number of significant figures.
a) 1.449
b) 1.4
c) 1.4490
d) 1.45
e) 1.5
2. Lead has a density of 11.3 g/mL. The water level in a graduated cylinder initially at 15 mL rises to 85 mL after a piece of lead is submerged. What is the mass of the piece of lead?
a) 25 g
b) 170 g
c) 790 g
d) 6.2 g
e) 960 g
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Help please, I have to briefly explain how I got my
answers!
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