density question?

2 ⤊

The density of iron is 7.87 g/mL . What is the mass of a 3.00 cm * 4.00 cm * 1.00 cm block of iron?
Express your answer in grams and show your work.

2007-09-03 14:14:06 · 3 answers · asked by Cindie lou 1 in Science & Mathematics ➔ Mathematics

V = 3 x 4 x 1 cm ³
V = 12 cm ³
Density = 7. 87 g / cm ³
Mass = Density x Volume
Mass = 7. 87 x 12 g
Mass = 94 . 4 g ( to 1 decimal place)

2007-09-04 10:15:00 · answer #1 · answered by Como 7 · 1⤊ 0⤋

3x4x1 = 12 cubic centimeters = 12 ml

7.87 g/ml x 12 ml = 94.4 gm
(not 94.44. only 3 sig fig)

2007-09-03 21:25:24 · answer #2 · answered by davidosterberg1 6 · 0⤊ 0⤋

DO YOUR OWN HOMEWORK

2007-09-03 21:25:32 · answer #3 · answered by cheek_of_it_all 5 · 1⤊ 2⤋