Question

calculate the mass of Signature required to make a 500 ml of 0.5 aqueous solution

Answer 1

The formula for calculating molarity is:
Molarity (M) = moles of solute/liters of solution
Molarity = 0.5 M
Volume of solution = 500ml = 0.5L
Moles = molarity × liters of solution
= 0.5 × 0.5 = 0.25moles
0.25 moles of NaOH

For Find the mass of 0.25 moles of NaOH
mass = moles × molar mass
= 0.25 × 40
= 10g

The mass required of sodium hydroxide to make 500ml of 0.5M aqueous solution is 10 g

Answer 2

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Calculate the mass of naoh required to make 500ml of 0.5 M aqueous solution

The formula for calculating molarity is:

Molarity (M) = moles of solute/liters of solution

Molarity = 0.5 M
Volume of solution = 500ml = 0.5L

Moles = molarity × liters of solution
           = 0.5 × 0.5 = 0.25moles

0.25 moles of NaOH

Find the mass of 0.25 moles of NaOH

mass = moles × molar mass
         = 0.25 × 40
         = 10g

The mass required of sodium hydroxide to make 500ml of 0.5M aqueous solution is 10 g
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