Question

0.30 moles kbr is dissolved in 0.15 l of solution. what is the concentration in units of molarity?

• your answer should have two significant figures (round your answer to one decimal place).
• do not include units in your response.

Explanation:

Step1: Recall the formula for molarity

Molarity ($M$) is calculated as $M=\frac{n}{V}$, where $n$ is the number of moles of solute and $V$ is the volume of the solution in liters.

Step2: Substitute the given values

Here, $n = 0.30$ moles and $V=0.15$ L. So, $M=\frac{0.30}{0.15}$.

Step3: Perform the calculation

$\frac{0.30}{0.15}=2.0$ (rounded to one decimal place as required).

Answer:

2.0