Question

A student measures the mass and volume of a sample of copper at room temperature and 101.3 kpa. the mass is 48.9 grams and the volume is 5.00 cubic centimeters. the student calculates the density of the sample. what is the percent error of the student's calculated density? 7.4% 8.4% 9.2% 10.2%

Answer 1

3. 9.2%

Step-by-step explanation:

The formula for density is on Reference Table T.

density equals mass over volume

The student would use his measurements to calculate the density of the sample.

density equals mass over volume, which equas 48 point 9 grams over 5 point zero zero cubic centimeters, which equals 9 point 7 eight grams per cubic centimeter

Reference Table S lists the density of copper as 8.96g/cm3.

The formula for percent error is found on Reference Table T.

percent error equals measured value minus accepted value over the accepted value times 100. percent error equals 9 point 7 eight grams per cubic centimeter minus 8 point 9 five grams per cubic centimeter over 8 point 9 five grams per cubic centimeter times 100, which equals 9 point 2 percent.

Answer 2

Answer is: the percent error is 9.2%.

d(Cu) = 8.96 g/cm³; accepted density of copper.
m(Cu) = 48.9 g.
V(Cu) = 5.00 cm³.
d₁(Cu) = m(Cu) ÷ V(Cu).
d₁(Cu) =48.9 g ÷ 5.00 cm³.
d₁(Cu) = 9.78 g/cm³; calculated density of copper.
the percent error = (d₁(Cu) - d(Cu)) ÷ d(Cu) · 100%.
the percent error = (9.78 g/cm³ - 8.96 g/cm³) ÷ 8.96 g/cm³ · 100%.
the percent error = 9.2 %.