Question

How many moles of FeCl₂ are in 10 ml of 0.20 M FeCl₂ solution?

A) 0.002 moles
B) 0.004 moles
C) 0.01 moles
D) 0.02 moles

Answer 1

There are 0.002 moles of FeCl₂ in 10 mL of 0.20 M FeCl₂ solution, which is calculated by multiplying the molarity (0.20 M) by the volume in liters (0.01 L).

Step-by-step explanation:

To find the number of moles of FeCl₂ in 10 mL of 0.20 M FeCl₂ solution, we can use the formula:

Number of moles = Molarity (M) × Volume (L)

First, we convert the volume from milliliters to liters:

10 mL × (1 L / 1000 mL) = 0.01 L

Then we multiply the molarity by the volume in liters:

0.20 M × 0.01 L = 0.002 moles

Therefore, there are 0.002 moles of FeCl₂ in 10 mL of 0.20 M FeCl₂ solution, which corresponds to option A.