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 stu

Question

3 years ago

14

dent 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

2 answers:

Pani-rosa [81] · Answer 1 · 2022-07-27T22:56:59+03:00

83.3 mL

Explanation:

M $_{i}$ = 3M

V $_{i}$ = 50mL

M $_{f}$ = 1.80M

Unknown:

V $_{f}$ = ?

Solution:

To solve this problem we must understand that the initial and final number of moles remains the same.

Number of moles = molarity x volume

Molarity x volume of initial solution = Molarity x volume of final solution

Therefore:

M $_{i}$ x V $_{i}$ = M $_{f}$ x V $_{f}$

M is the molarity

V is the volume

i = initial state

f = final state

input the parameters;

3 x 50 = 1.8 x V $_{f}$

V $_{f}$ = 83.3 mL

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forsale [732] · Answer 2 · 2022-07-28T01:16:02+03:00

3 0

Answer:

83.3

Explanation:

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