1. An object weighing 12.22 g is added to 24.97mL of water in a graduated cylind

Question

1. An object weighing 12.22 g is added to 24.97mL of water in a graduated cylinder. The water level rises to 27.66mL. Calcualte the density of the material?

2. A piece of alloy in the form of a disk weights 50.0 grams. The disc is 0.250 inches thick and has a circular cross-section of diameter 1.380 inches. What is the density of the alloy in grams per cubic centimeter?

3. A wooden block, 10"x10"x2.0" , weights 3 Ib. 6 oz. What is the density of the wood in ounces per square inches?

4. A steel ball has a diameter of 0.750 cm and weights 1.765 g. What is its density in grams per cubic centimeter?

*show steps please!

Explanation / Answer

1)density=12.22/(27.66 - 24.97)=4.543g/mL

2) dia 1.38 ...radius=0.69inch

outer radius=0.69+0.25=0.94inch

density=50/[(pi0.94^2) - (pi0.69^2)]L = 39.056/L gm/inch^3

where L is the length of the cylinder

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