Question

how many moles of solute are in 3.0 l of 2.0 m solution?
a 3.0 mol
b 0.67 mol
c 6.0 mol
d 1.5 mol

Explanation:

Step1: Recall the formula for molarity

The formula for molarity \(M=\frac{n}{V}\), where \(M\) is molarity, \(n\) is the number of moles of solute, and \(V\) is the volume of the solution in liters. We can rearrange this formula to solve for \(n\): \(n = M\times V\).

Step2: Substitute the given values into the formula

Given \(M = 2.0\space M\) and \(V=3.0\space L\). Substitute these values into the formula \(n = M\times V\): \(n=(2.0\space mol/L)\times(3.0\space L)\).

Step3: Calculate the number of moles

When we multiply \(2.0\) by \(3.0\), we get \(n = 6.0\space mol\).

Answer:

C. 6.0 mol