Answer:
0.178 M
Explanation:
First we determine the molar mass of NaOH, using the given molar masses of the elements:
- Molar Mass of NaOH = Molar Mass of Na + Molar Mass of O + Molar Mass of H
- Molar Mass of NaOH = 40 g/mol
Then we convert 5.000 grams of NaOH into moles, using its molar mass:
- 5.000 g ÷ 40 g/mol = 0.125 mol
Now we convert 700.0 mL into L:
- 700.0 mL / 1000 = 0.700 L
Finally we calculate the molarity of the solution:
- Molarity = moles / liters
- 0.125 mol / 0.700 L = 0.178 M
