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1.Calculate the mass of compound required to prepare 100.00 mL of a 1.40x10-2M CuCl2.Show your work.
2. If 2.50g of NaOH are dissolved in 100.00 mL of water, what is the molarity of the solution? Show your work.
3. If 10.00mL of the solution in question 2 are diluted to 100.00 mL, what will be the molarity of the dilute solution? Show your work.
4. If 10.00 mL of the solution in question 2 are combined with to 25.00 mL of the solution from question 3 in a 100 mL volumetric flask and diluted to 100.00 mL, what will be the molarity

of the final solution? Show your work.



PLS HELP

Answer :

PSTNONSONJOKUGO

The concentration of the diluted solution is 0.0625 M.

What is concentration?

The term concentration refers to the amount of substance present in solution.

1) To find the mass of the compound;

mass/134 g/mol = 1.40x10-2M × 100/1000

mass = 1.40x10-2M × 100/1000 × 134 g/mol

mass = 0.19 g

2) To find the molarity of the solution;

2.50 g/40 = 100/1000 × M

M = 2.50 g/40 × 1000/100

M = 0.625 M

3) Using;

C1V1 = C2V2

0.625 M × 10.00mL = C2 × 100.00 mL

C2 = 0.625 M × 10.00mL/ 100.00 mL

C2 = 0.0625 M

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