Chemistry Easy 10 points ? please help!!!!

Posted on 2015-09-01 12:38:00 in Chemistry by MING

1. You add 5.1 g of iron to 26.70 mL of water and observe that the volume of iron and water together is 27.35 mL . Calculate the density of iron.

2. Follow the steps provided in the simulation to add water to the graduated cylinder, select one of the three samples (copper, silver, or gold), set its mass to the values given in the statements below, find its volume, and calculate its density.

To save time, you can approximate the initial mass of the solid to the nearest ±1 g. For example, if you are asked to add 14.3 g of copper, add between 13 g and 15 g.
Which of the following sets include two samples with an equal density?

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