Question

alguem me ajuda pffff

Answer 1

1)d=m/v 2,7=13,5/v 2,7v=13,5 v= 13.5/2.7 v=5cm3
2) c= m/v 20=m/0.04 m=0.8g
3) c=m/v c=37/0.25 c=148g/l