Réponse:
unité commune choisie : g/L
♦ Grès : 1700 kg/m³ = 1700 g/L
♦ calcaire : 2,250 kg/L = 2,250 × 1000 g/L
= 2250 g/L
♦ Pierre ponce:0,910 kg/dm³ = 0,910 × 1000 g/L
= 910 g/L
♦ Ardoise : 250 g/L
♦ Titane : 4,500 g/cm³ = 4,500 × 1000
= 4500 g/L
♦ Aluminium : 0,0027 kg/cm³ = 0,0027 × 1000000 = 2700 g/L
Ranger par ordre croissant :
250 g/L < 910 g/L < 1700 g/L < 2250 g/L < 2700 g/L < 4500 g/L
Explications:
1kg = 1000g
1m³ = 1000 L donc 1 kg/m³ = 1000g/1000L
= 1 g/L
1dm³ = 1L donc 1kg/dm³ = 1000g/L
1 dm³ = 1000 cm³ = 1000 L
1 kg/cm³ = 1000000 g/L
