Name ____________________________________ Date _________________ Density and Temperature Worksheet KEY 1. A sample of an unknown metal has a mass of 35.4 g and a volume of 3.11 cm3. Calculate its density. D = m/v D = 35.4 / 3.11 = 11.38 ≈ 11.4 g/cm3 2. A block of metal has a volume of 13.4 in3 and weight 5.14 lbs. What is its density in grams per cubic centimeters? 5.14 lbs = 2.325 x 103 g. 13.4 in3 = 2.1958 x 102 cm3 D = 2.325 x 103 g/2.1958 x 102 cm3 = 10.6 g/cm3 3. The density of platinum is 21.4 g/cm3. What is its density in pounds per cubic inch? !"#$%&% "%*& !#!"%,-. !#0$%'( ! 3 4 +#550%,-.612 ! )% %)% %)%/ "%12 "%*& "%'(! "+! & 4. Calculate the mass of a rectangular solid that has a density of 2.53 g/cm3 and measures 2.50 cm by 1.80 cm by 3.00 cm. 2.5 cm x 1.80 cm x 3.00 cm = 13.5 cm3 m = 13.5 cm3 x 2.53 g/cm3 = 34.2 g 5. Copper has a density of 8.96 g/cm3. If a cylinder of copper weighing 42.38 g is dropped into a graduated cylinder containing 20.00 mL of water, what will be the new water level? v = D/m = 42.38 g / 8.96 g/cm3 = 4.73 cm3 = 4.73 mL 4.73 mL + 20.00 mL = 24.73 mL 6. The density of gold is 19.3 g/mL. What is the volume in liters of a gold nugget that weighs 63.3 g? v = D/m = 63.3 g / 19.3 g/mL = 3.28 mL = 0.00328 L 7. A graduated cylinder contains 20.0 mL of water. An irregularly shaped object is placed in the cylinder and the water level rises to the 31.2 mL mark. If the object has a mass of 47.9 g, what is its density? 31.2 mL – 20 mL = 11.2 mL D = 47.9 g / 11.2 mL = 4.28 g/mL 8. Convert 23.2 °C to °F. = 73.76 °F 9. Convert 801 K to °C. = 527.85 °C 10. Convert 16.7 °F to °C. = -8.5 °C 11. What Kelvin temperature reading equals 98.6 °F? = 310.15 K 12. Convert -27.0 °F to °C. = - 32.78 °C 13. Convert -40.0 °C to °F. = - 40 °F 14. Convert 27 °C to K. = 300.15 K