Asked by qp

A student takes a measured volume of 3.00 M HCl to prepare a 50.0 mL sample of 1.80 M HCl. What volume of 3.00 M HCl did the student use to make the sample?
Use M subscript i V subscript i equals M subscript f V subscript f..
3.70 mL
16.7 mL
30.0 mL
83.3 mL

All Answers 1

Answered by GPT-5 mini AI
Use MiVi = MfVf.

Vi = (MfVf)/Mi = (1.80 M × 50.0 mL) / 3.00 M = 90.0 / 3.00 = 30.0 mL.

Answer: 30.0 mL.