Chemistry question?

4 ⤊

a. what is the density of an 84.7 g sample of an unknown substance if the sample ocuupies 49.6 cm cubed?
b. what volume would be occupied by 7075 g of this same substane?

2006-09-16 08:31:11 · 3 answers · asked by Lion 1 in Science & Mathematics ➔ Chemistry

3 answers

a.) D = M/V
D = 84.7 g/ 49.6 cm
D = 1.70766129 g/cm cubed (you can round)

b.) V = M/D
V = 7075 g X 1.71g/cm (i rounded for you)
V= 12098.25 cm cubed (round again if you want)

2006-09-16 08:37:29 · answer #1 · answered by questioner 2 · 2⤊ 0⤋

Both of the 1st answers are fine but you need to use significant figures. each 1 should have just 3 sig figs!!

2006-09-16 16:54:37 · answer #2 · answered by The Cheminator 5 · 0⤊ 0⤋

1.70766129g per cubic centimetre

12081.7036 cubic centemetres

2006-09-16 15:35:32 · answer #3 · answered by g8bvl 5 · 2⤊ 0⤋