Question

Calculate the molarity of solution given the following information:

10.0 g of NaOH were dissolved in 500.0 mL of solution.

Answer 1

molarity= no of mol of NaOH/volume
no of mol of NaOH= mass/molar mass

Can you get the answer now?

Answer 2

i need help idk!!

Answer 3

0.020 M
0.500 M
5.00 M
20.0 M
there's the multiple choices..

Answer 4

Firstly, you need to find number of mol of NaOH. NaOH given mass is 10.0g, the molar mass is (23+16+1)=40 g/mol. So the amount of the mol is:

Then, to find the molarity, you divide the amount of mol with volume. The volume must be in litre i.e. you convert 500mL into 0.5L.

'M' stands for mol/L.

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