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Calculate the molarity for each solution :
a) 1.5 L of solution containing 2.5 mol of sugar
b) 0.15 mol of H2SO4 in 400 cm³ solution
c) 0.12 g of NaOH in 325 mL of solution

Respuesta :

Joakim

a) c = n/V = 2.5 / 1.5 = 1.7 moles/dm3

b) c = n/V = 0.15 / 0.4 = 0.4 moles/dm3

c) n = m/M = 0.12 / 39.997 = 0.003 moles. c = n/V = 0.003 / 0.325 = 0.009 moles/dm3

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