the volume of an object is found to be 24.7 cm3 and the mass is 16.21 g. calculate the density of the object to the correct number of significant digits.
a. 0.721 g/cm3
b. 0.6563. g/cm3
c. 0.7 g/cm3
d. o.656 g/cm3
2006-12-03 17:31:16 · 5 answers · asked by mgskills 1 in Science & Mathematics ➔ Chemistry
denisty is mass/vol
16.21 g/24.7 cm^3 = 0.656 g/cm3
Since there are only three significant figures for the volume, then the most significant figures we can use for the answer is three.
Thus the answer is d
2006-12-03 17:34:41 · answer #1 · answered by borscht 6 · 0⤊ 0⤋
density = mass/vol = 16.21/24.7=0.656g/cm3
2006-12-04 01:52:15 · answer #2 · answered by horse 2 · 0⤊ 0⤋
density = mass/volume = 0.6563 g/mL
So it could either b or d, can't remember the significant digit rules.
2006-12-04 01:33:39 · answer #3 · answered by feanor 7 · 0⤊ 0⤋
16.21/24.7 =0.6563g/cm^3
simple only a dvision, without change of units
2006-12-04 01:36:44 · answer #4 · answered by maussy 7 · 0⤊ 0⤋
density is straight mass/volume... use a calculator.
2006-12-04 01:33:29 · answer #5 · answered by TankAnswer 4 · 0⤊ 0⤋