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Use M1V1=M2V2 to calculate the volume of stock solution required to prepare solutions of 0.03M, 0.06M,...

Use M1V1=M2V2 to calculate the volume of stock solution required to prepare solutions of 0.03M, 0.06M, 0.09M, 0.12M, and 0.15M from a stock solution of 0.150M Co(NO3)2 Please show work

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Answer #1

0.03M solution from 0.15M Co(NO3)2 stock soltuion

M1V1 = M2V2

M1 = Molarity of stock solution = 0.15

V1 = Volume of stock solution =?

M2 = Molarity of Co(NO3)2 required=0.03 M

V2 = Volume of Co(NO3)2 required = 100mL

V1 = M2V2/M1 = 0.03*100/0.15 = 20mL

Similarly for 0.06M Co(NO3)2 solution, V1= M2V2/M1 = 0.06*100/0.15 = 40mL

0.09M Co(NO3)2 solution, V1= M2V2/M1 = 0.09*100/0.15 = 60mL

0.12M Co(NO3)2 solution, V1= M2V2/M1 = 0.12*100/0.15 = 80mL

0.15M Co(NO3)2 solution, V1= M2V2/M1 = 0.15*100/0.15 = 100mL

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