Question

1. You add 9.1 g of iron to 29.30 mL of water and observe that the volume of iron and water together is 30.46 mL . Calculate the density of iron.

Express your answer to two significant figures with the appropriate units.

2.

Since density depends on the mass and volume of an object, we need both of these values combined in the correct way to solve for density. Keep in mind that we may not be given the mass and volume directly, or the values may not be given in the units we want and we need to convert to the correct units before solving for density.

When converting between metric units, use the prefixes to help you determine the magnitude of a value. The prefix k indicates kilo, 1000. Therefore 1000 g= 1 kg.

A 19.0 kg iron weightlifting plate has a volume of 2410 cm3 . What is the density of the iron plate in g/cm3?

Express your answer in grams per cubic centimeter to three significant figures.