Question

1.28.5 g of iron is added to a graduated cylinder containing 45.50 mL of water. The water level rises to the 49.10 mL mark. From this information, calculate the density of iron.

Answer 1

The density of iron can be calculated using the formula:

Density = Mass / Volume

The mass of iron added is 1.28.5 g. The volume of water displaced is the difference between the final and initial volume of water, which is:

Volume = 49.10 mL - 45.50 mL = 3.60 mL

Note that 1 mL of water is equivalent to 1 g.

Therefore, the density of iron is:

Density = 1.28.5 g / 3.60 mL = 7.14 g/mL.