University:
Cambridge College
Course:
SCI 688 | Methods and Materials in Teaching Middle School Chemistry
Academic year:

2023
Views:

132

Pages:

1
Author:

meloraqura

Density Practice Problems 1. A platinum bar measures 5.0 cm long, 4.0 cm wide, and 1.5 cm thick. It has a mass of 700.0 grams. a. Calculate the volume of the platinum bar. 5x4x1.5= 30 ml b. Calculate the density of the platinum bar. 700g/30ml= 23.3 g/ml 2. A lead cylinder has a mass of 540 grams and a density of 2.70 g/ml. Calculate the volume of the lead cylinder. d=m/v 2.7g/ml= 540g/v v= 200ml 3. A cork has a mass of 3 grams and a volume of 16 cm3. Calculate the density. d=m/v 3g/16ml= .1875 g/ml 4. A thin glass bottle holds 25 ml of liquid and has a mass of 19 grams. Calculate the density. d=m/v d= 19g/25ml d= .76 g/ml 5. A bar of soap is 12 cm tall, 6 cm wide, and 10 cm long. It has a mass of 415 grams. What is the density of the bar of soap. v= lxwxh v= 12x6x10 v= 720ml d=m/v d=415g/720ml d= .576 g/ml 6. A sheet of metal is 2 mm wide, 10 cm tall, and 15 cm long. It weighs 4 grams. What is the density? v= lxwxh v= 10x15x.2 v=3 cm3 d=m/v d=4g/3ml d= .0013 g/ml 7. A pencil has a density of .875 g/ml. It has a mass of 3.5 grams. What is the volume? d=m/v .875g/ml=3.5g/v v= 4ml 8. Find the mass of a 50.0 ml quantity of water. d=m/v 1g/ml=m/50ml m= 50g 9. If the density of 45.0 cm3 block of wood is 0.65 g/ml calculate the wood’s mass. d=m/v .65g/ml=m/45ml m= 29.25 g

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