1.12: Problem Solving in Chemistry
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Which measurement has three significant figures?
1.02×10−3g
Nitrogen has a density of 1.17×10−3g/cm3. What is the correct mass for 2,500 cm3 of nitrogen gas using significant figures?
2.9 g
An enzyme works best at 98.6°F. The equation used to describe it requires the temperature to be in K.What is the correct temperature? Use (F×0.555)+255.37=K or (K−255.37)×1.8=F.
310 K
What is the correct scientific notation for 0.000056?
5.6×10−5
Standard conditions for an experimental chemistry reaction require a temperature of 298 K. The temperature in the lab is 65°F. Which of the following must you do to meet the requirements? ([°F×0.555]+255.37=K and [K−255.37]×1.8=°F)
Increase the room temperature by 7 K
