How many mL of solution of a 3 M NaCl do you need to prepare 100 mL of 0.15 M NaCl? A. 7.5 ml B. 2000 ml C. 5 ml D. 0.45 ml

asked Nov 23, 2024 76.1k views

5 votes

How many mL of solution of a 3 M NaCl do you need to prepare 100 mL of 0.15 M NaCl?

A. 7.5 ml
B. 2000 ml
C. 5 ml
D. 0.45 ml

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5 votes

Answer: C

Step-by-step explanation:

Use the dilution formula

M1V1 = M2V2

V1= M2V2/M1

V1= 0.15 X 100 / 3 = 5 mL

Cdrrr answered Nov 28, 2024

by Cdrrr

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