HW1 quest 18

Determine the density ( g/mL g/mL) for each of the following: Part A Part complete The fluid in a car battery has a volume of 125  mL mL and a mass of 153  g g . Express your answer using three significant figures. density = 1.22 g/mL g/ mL Submit Previous   Answers  Correct Density is the mass of matter found in a specific volume of space. Density can be calculated as follows: density=== massofsubstancevolumeofsubstance153g125mL 1.22 g/ mL density=massofsubstancevolumeofsubstance=153g125mL=1.22 g/mL Part B Part complete A plastic material weighs 2.80  lb lb and has a volume of 3.5  L L . Express your answer using two significant figures. density = 0.36 g/mL g/ mL Submit Previous   Answers  Correct You are asked to solve for density in  g/mL g/mL. Therefore, the weight of 2.80  lb lb needs to be converted into grams and the volume of 3.5  L L should be converted into milliliters: 2.80 lb× 454g1 lb 3.5 L× 1000mL1 L ==massofplasticmaterialvolumeofpl asticmaterial 2.80 lb×454g1 lb=massofplasticmaterial3.5 L×1000mL1 L=volumeofplasticmaterial Density, the mass per unit volume for the plastic, can then be calculated as follows: density=== massofsubstancevolumeofsubstance2.80lb×454 g/lb3.5L×1000 mL/L 0.36 g/mL density=massofsubstancevolumeofsubstance=2.80lb×454 g/lb3.5L×1000 mL/L=0.36 g/mL Part C Part complete A 4.000- mL mL urine sample from a person suffering from diabetes mellitus has a mass of 4.004  g g . Express your answer using four significant figures. density = 1.001 g/mL g/ mL Submit Previous   Answers  Correct