Determining the density of a solid. A student weighed a lab beaker on the 1 mg b
ID: 914765 • Letter: D
Question
Determining the density of a solid.
A student weighed a lab beaker on the 1 mg balance, and found a mass of 132.537 g. They added a solid sample to the beaker and weighed it again, finding a mass of 147.626 g.
Weighing by difference, the mass of the solid sample is: __________ g.
The number of significant figures is: _____________
The student partially filled a graduated cylinder with water to a volume of 15.26 mL. Upon adding the solid sample, the volume in the cylinder increased to 18.48 mL.
Finding volume by difference, the volume of the solid sample is: _____________ mL
The number of significant digits is: ____________________
Using the mass of the solid sample in grams, and the volume of the solid sample in cm3 (remember that 1 mL = 1 cm3), the density of the solid sample, using Equation 1, is: __________________ g/cm3
The number of significant digits is:_________________
Explanation / Answer
mass of the solid sample is (147.626-132.537)= 15.089ml
significant figure is 5
volume of the solid sample is (18.48-15.36) =3.12ml
significant digits is 3
density of solid sample is (15.089/3.12)=4.836g/ml(actually the value is 4.8362178....,but we consider up to 4
significant digits )
significant digits is 4,
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