Answer: 13mL
Step-by-step explanation:
C1 = 5M
V1 =?
C2 = 1.3M
V2 = 50mL
C1V1 = C2V2
5 x V1 = 1.3 x 50
V1 = (1.3 x 50) / 5
V1 = 13mL
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