How much can l dissolve pellets of NaOH (40g) to make 250ml
Chemistry
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Answer
4 mol/L
Step-by-step solution
3 stepsDetermine the molar mass of NaOH.
The molar mass of Sodium (Na) is approximately 23 g/mol.
The molar mass of Oxygen (O) is approximately 16 g/mol.
The molar mass of Hydrogen (H) is approximately 1 g/mol.
Molar mass of NaOH = 23 + 16 + 1 = 40 g/mol.Calculate the moles of NaOH.
Moles = Mass / Molar mass
Moles of NaOH = 40 g / 40 g/mol = 1 mol.Calculate the molarity of the solution.
Molarity (M) = Moles of solute / Volume of solution in liters
Volume of solution = 250 ml = 0.250 L
Molarity = 1 mol / 0.250 L = 4 mol/L.The final answer is 4 mol/L.
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