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“The Density Equation” Density (g/mL or g/cm3) Mass (g) Volume (mL or cm3) Liquid - graduated cylinder •Read at the meniscus Regular Solid - L x W x H = cm3 Irregular Solid - displacement Let’s Practice… If the mass of an object is 6 grams and the volume is 3 mL, what is the density of the object? Step 1 Step 2 Step 3 Step 4 m = 6g D = m 1 V V = 3mL D= ? D = 6g 3mL D = 2 g/mL Let’s Practice… If the density of an object is 2 g/mL and the volume is 4 mL, what is the mass of the object? Step 1 Step 2 Step 3 Step 4 m= ? V = 4mL D = 2 g/mL m = 8 g/mL Let’s Practice… If the density of an object is 5 g/mL and the mass is 15 g, what is the volume of the object? Step 1 Step 2 Step 3 Step 4 m = 15g V= ? D = 15 g/mL V = 1 mL 1. 2. 3. 4. If the mass of an object is 20 g and the volume of the object is 50 cm3, what is the density? Will it sink or float in H2O? If the mass of an object is 12 g and the dimensions are 2cm x 2cm x 3cm, what is the density of the object? What is the mass of an object with a volume of 2 cm3 and a density of 6 g/cm3? What is the volume of a object with a mass of 24 g and a density of 8 g/mL?