Question

question 4 (1 point)
what volume of 1.50 m kbr solution should you use to make 50.00 ml of 0.35 m kbr solution?
a) 26.3 ml
b) 11.7 ml
c) 0.350 ml
d) 214 ml

Explanation:

Step1: Use dilution formula

$M_1V_1 = M_2V_2$

Step2: Identify given values

$M_1 = 1.50\ M$, $M_2=0.35\ M$, $V_2 = 50.00\ mL$

Step3: Solve for $V_1$

$V_1=\frac{M_2V_2}{M_1}=\frac{0.35\ M\times50.00\ mL}{1.50\ M}\approx11.7\ mL$

Answer:

B. 11.7 mL