Question

A 2 mL sample of concentration 0.0043 M is measured out with a volumetric pipet and diluted to 100.0 mL. What is the concentration (in M) for this solution? Give your numerical answer to three significant figures and leave off the unit label.

Answer 1

Step-by-step explanation:

The dilution formula is

s₁ v₁ = s₂ v₂

s₁ = .0043

v₁= 2 mL

v₂ = 100 mL

s₂ = ?

putting the values

.0043 x 2 = s₂ x 100

s₂ = .000086 = 86.0 x 10⁻⁶