1. What is the final volume in milliliters when 0.600 L of a 36.4 % (m/v) soluti

Question

1. What is the final volume in milliliters when 0.600L of a 36.4% (m/v) solution is diluted to 21.4% (m/v)? Express your answer numerically in milliliters.
2. A 695 mL
NaCl solution is diluted to a volume of 1.25L and a concentration of 5.00M . What was the initial concentration? Express the molar concentration numerically.
1. What is the final volume in milliliters when 0.600L of a 36.4% (m/v) solution is diluted to 21.4% (m/v)? Express your answer numerically in milliliters.
2. A 695 mL
NaCl solution is diluted to a volume of 1.25L and a concentration of 5.00M . What was the initial concentration? Express the molar concentration numerically.

Explanation / Answer

Number of moles remain same

=>0.6*36.4 =x*21.4

If x litres is the final volume (As no. of moles = Total volume*Molarity which would remain same here)

=>1.02 litres or 1020 mL

2.

Number of moles of Nacl remain same as we are only diluting it.

=>Number of moles of Nacl = 1.25*5 =6.25 moles

Molarity = No. of moles/Volume =>6.25/.695 = 9M

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