Chem 2A ch3

Iron has a density of 7.9 g/mL. What is the volume (in mL) for a sample of iron weighing 90.5 g using the correct number of significant figures?

(c) 11

A 7.60 cm3 piece of metal has a mass of 65.588 g. Calculate its density using the correct number of significant figures

(c) 8.63

How many dollars can you earn in a part-time job in three months if you're hourly wage is $6.45, you average 13.6 hours per week, and there are 4.33 weeks in a month?

(d) $1139.48

Convert 25 (F to (C using the correct number of significant figures.

-3.9

Convert 980 mg to pounds (2.2 pounds = 1.0 kg) using the correct number of significant figures.

0.0022

Convert 2.5 m to cm using the correct number of significant figures.

250

At flow rate of 1.8 L/min at 1700 psi, how many hours will the E-tank last (0.28 L = 1 psi) using the correct number of significant figures?

4.4

Convert 141 miles to feet (5280 ft = 1.00 mile) using the correct number of significant figures.

744,000

A container has sides with a length of 2.91 cm by 4.20 cm by 3.51 cm, what is the volume of the container with the correct number of significant figures?

E (42.9 cm3)

Write the answer to the following calculation with the correct number of significant figures: (-4.39 x 104) (107)(7.11 x 101)

None of the above (-5.77)