1.12

Which of the following measurements has three significant figures?

1.02 x 10-3 g

Nitrogen has a density of 1.17 x 10-3 g/cm3. If you have 2,500 cm3 of nitrogen gas, which of the following is the correct mass of nitrogen, using significant figures?

2.9 g

An enzyme works best at 98.6°F. But the equation that you must use to describe it requires the temperature to be in K. Which of the following is the correct temperature? ([°F x 0.555] + 255.37 = K and [K - 255.37] x 1.8 = °F)

310 K

Which of the following is the correct scientific notation for 0.000056 g?

5.6 x 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 x 0.555] + 255.37 = K and [K - 255.37] x 1.8 = °F)

Increase the room temperature by 7K