Calculate the moles of NaCl in a 5 L of a 4 M NaCl solution?

20moles

Explanation:

Molarity of a solution = moles of solute / volume of solution

Therefore

Molarity of NaCl solution  = moles of NaCl ÷ volume of NaCl solution

Given,

Molarity of solution = 4M

Moles of NaCl = ?

Volume of solution = 5L

4M = moles of NaCl ÷ 5L

Multiply both sides by 5

Moles of NaCl = 4×5 moles

= 20moles

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thats how its supposed to be