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Aluminum. Platinum. Mercury. DENSITY – The mass of one cm 3 or one mL of a substance. 13.6 g/cm 3. 21.5 g/cm 3. 2.7 g/cm 3. Problem : A piece of copper has a mass of 57.54 g. It is 9.36 cm long, 7.23 cm wide, and 0.95 mm thick. Calculate density (g/cm 3 ).
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Aluminum Platinum Mercury DENSITY – The mass of one cm3 or one mL of a substance 13.6 g/cm3 21.5 g/cm3 2.7 g/cm3
Problem: A piece of copper has a mass of 57.54 g. It is 9.36 cm long, 7.23 cm wide, and 0.95 mm thick. Calculate density (g/cm3).
ProblemA piece of copper has a mass of 57.54 g. It is 9.36 cm long, 7.23 cm wide, and 0.95 mm thick. Calculate density (g/cm3). G= U= E= S= S= M= 57.54 g, Length= 9.36 cm Width= 7.23 cm, Thickness0.95 mm Density= ? (g/cm3) Density= mass volume Volume = l x w x h 0.95 mm x 1 m x 102 cm 103 mm 1 m =0.095 cm3 Volume = 9.36 cm x7.23 cm x 0.095 cm = 6.4 cm3 Density= 57.54 g 6.4 cm3 =8.990625 or 9.0 g/cm3
PROBLEM: Mercury (Hg) has a density of 13.6 g/cm3. What is the mass of 95 mL of Hg in grams?
PROBLEM: Mercury (Hg) has a density of 13.6 g/cm3. What is the mass of 95 mL of Hg? G= U= E= S= S= D= 13.6 g/cm3, Volume = 95mL Mass=? Density= mass volume Mass= density x volume Mass= 13.6 g/cm3 x 95mL 1 cm3 = 1 mL 1292g 1300 g
Learning Check Osmium is a very dense metal. What is its density in g/cm3 if 50.00 g of the metal occupies a volume of 2.22cm3? A) 2.25 g/cm3 B) 22.5 g/cm3 C) 111 g/cm3 G= U= E= S= S=
Volume/Water Displacement A solid displaces a matching volume of water when the solid is placed in water. What is the volume of the metal object. 33 mL 25 mL V= 33mL-25mL 8 mL
What is the density (g/cm3) of 48 g of a metal if the metal raises the level of water in a graduated cylinder from 25 mL to 33 mL? G U E S S M= 48 g V= 8 mL V= 8 cm3 D= mass Volume D= g/cm3 D= 48 g 8cm3 D= 6.0 cm3
Learning Check Which diagram represents the liquid layers in the cylinder? (K) Karo syrup (1.4 g/mL), (V) vegetable oil (0.91 g/mL,) (W) water (1.0 g/mL) A)B)C) K W V V K W W V K
Learning Check Which diagram represents layers in the cylinder? Each layer represent a different phase or state of matter (I) Solid water (ice) (0.9 g/mL), (V) Water vapor (0.84 g/mL,) (W) liquid water (1.0 g/mL) A)B.)C) I V W W I V V W I
Solution (K) Karo syrup (1.4 g/mL), (V) vegetable oil (0.91 g/mL,) (W) water (1.0 g/mL) 1) V W K
Exit Ticket • The table below shows some information for four different elements. • A cube of an unknown element has a shiny silvery color. The side of the cube measures 3.0 cm and the cube has a mass of 194.4 g. Based on the information provided, which element makes up the cube? • A barium B beryllium C chromium D phosphorous