a) If an unknown solid weighs 84.0 grams and occupies 30.0cm 3 of space, what is
ID: 76939 • Letter: A
Question
a) If an unknown solid weighs 84.0 grams and occupies 30.0cm3 of space, what is its density? b) What is the mass of a liquid having a density of 1.50 g/mland volume of 3.5 liters? c) What volume would a 200 gram sample of gold have if itsdensity is known to be 20.5 g/cm3? a) If an unknown solid weighs 84.0 grams and occupies 30.0cm3 of space, what is its density? b) What is the mass of a liquid having a density of 1.50 g/mland volume of 3.5 liters? c) What volume would a 200 gram sample of gold have if itsdensity is known to be 20.5 g/cm3?Explanation / Answer
We know that : density = weight / volume = 84.0 g / 30.0 cm3 = 2.8 g / cc mass of the solid = density x volume of thesolution = 1.50 g / ml x 3.5 x 103 ml = 5250 g volume of the solution = mass of thesubstance / density of the solution = 200 g / 20.5 g / cc = 9.756 ml = 2.8 g / cc mass of the solid = density x volume of thesolution = 1.50 g / ml x 3.5 x 103 ml = 5250 g volume of the solution = mass of thesubstance / density of the solution = 200 g / 20.5 g / cc = 9.756 mlRelated Questions
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