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Mathilde3f
@Mathilde3f
May 2019
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Bonjour aidez moi s'il vous plaît à résoudre cet exercice
1) un échantillon à une masse de 128 grammes pour un volume de 17cm cube
A) calculer sa masse volumique en g/cm cube
B) convertir en kg/l
Merci
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scoladan
Verified answer
Bonjour,
masse volumique : 128/17 = 7,53 g.cm⁻³ (environ)
1 L = 1000 cm³
Et donc 7,53 g.cm⁻³ = 7,53 x 1000 g.L⁻¹ = 7530 g.L⁻¹
1 kg = 1000 g
Donc 7530 g.L⁻¹ = 7,530 kg.L⁻¹
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Verified answer
Bonjour,masse volumique : 128/17 = 7,53 g.cm⁻³ (environ)
1 L = 1000 cm³
Et donc 7,53 g.cm⁻³ = 7,53 x 1000 g.L⁻¹ = 7530 g.L⁻¹
1 kg = 1000 g
Donc 7530 g.L⁻¹ = 7,530 kg.L⁻¹