Respuesta :

JavierCollante
given the concentration as molarity, we can use the following formula to solve for the moles

moles= Molarity x Liters

Molarity= 0.40 M
liters= 650 mL= 0.650 L

moles= 0.40 x 0.650 = 0.26 moles
samueladesida43

There are 0.26 moles of solute in 650ml of a 0.40M solution.

HOW TO CALCULATE NUMBER OF MOLES:

  • The number of moles contained in a substance can be calculated by multiplying the molarity of that solution by its volume. That is;

no of moles (n) = molarity (M) × volume (V)

  • According to this question, a 0.40M solution has a volume of 650mL.

Volume = 650mL = 0.650L

no. of moles = 0.40 × 0.650

no. of moles = 0.26moles.

  • Therefore, there are 0.26 moles of solute in 650ml of a 0.40M solution.

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