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1. If there are 25 red colored glass beads in a bag that contains 150 glass beads, what is the percent of red glass beads? Show your calculations. 2. 25 red glass beads weighed 19.5 grams. How many milligrams (mg) is this? Show calculations. 3. The diameter of 1 red glass bead was 0.93 centimeters. How many millimeters (mm) is this? ored glass 4. 25 red glass beads had a volume of 15 milliliters (mL). How many liters is this? 5. Using the information in questions 2 and 4, what is the density of a red glass bead in g/mL? 11

A cubic box is completely filled with 1,331 g of water. What is the length of one side of the box, in meters? m Explain your reasoning. Since the density of water is g/cm, then the volume of 1,331 g of water is m³. A cubic box with a volume of cm³ is cm on each side. Converting cm to meters, the cube is m on each side.

The density of iron is 7.9 g/mL. a) What is the mass of a sample of iron that has a volume of 7.1 mL? b) what is the volume of a sample of aluminum that has a mass of 34.305 g? Fill in blanks.

c) A metal sample has a mass of 7.56 g. The sample is placed into a graduated cylinder previously filled with 20.00 mL of water (enough to cover the sample). If the final volume in the cylinder is 21.68 mL, what is the density of the substance? Consult Table 1.4 on page 19 of the textbook to identify the metal.

130. A titanium bicycle frame contains the same amount of tita- nium as a titanium cube measuring 6.8 cm on a side. Use the density of titanium to calculate the mass in kilograms of titanium in the frame. What would be the mass of a Titanium similar frame composed of iron? • A titanium bicycle frame contains the same amount of titanium as a titanium cube measuring 6.8 cm on a side. 6.8 cm