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Bonsoir je n’arrive pas à faire cette exercice
Merci d’avance
1) On connait : V = 22 mL ;m= 300 g, calculer p.
2) On connait: V = 34 mL, p= 52 g/mL, calculer m.
3) On connait: p = 523 g/mL, m= 67 g, calculer V.

Sagot :

QUANTUUM

Explications:

1) p = m/V = 300 g ÷ 22 mL = 13,636 g/mL

2) m = p×V = 52 g/mL×34mL = 1 768 g

3) V = m/p = 67 g ÷ 523 g/mL = 0,128 mL