Respostas

2014-03-04T22:24:38-03:00
1)
d=m/v
m=d.v
m=1,2.4
m=4,8g

2)
d=(0,1.10,5)+(0,9.8,9)
d=1,05+8,01
d=9,06g/ml
1 5 1