Question

question 8 (5 points)
how many moles of a solute is present in 4.00 l of an 8.30 m solution?
a) it depends on whether the solute is ionic or covalent
b) 8.3 mol
c) it depends on the volume of water.
d) 33.2 mol

Explanation:

Step1: Recall the formula for molarity

Molarity ($M$) is defined as moles of solute ($n$) divided by volume of solution in liters ($V$), so the formula is $M = \frac{n}{V}$. We can rearrange this to solve for moles: $n = M \times V$.

Step2: Substitute the given values

We are given $M = 8.30\ M$ (which is $\frac{\text{mol}}{\text{L}}$) and $V = 4.00\ \text{L}$. Plugging these into the formula: $n = 8.30\ \frac{\text{mol}}{\text{L}} \times 4.00\ \text{L}$.

Step3: Calculate the result

Multiplying $8.30$ by $4.00$ gives $8.30\times4.00 = 33.2$. So the number of moles $n = 33.2\ \text{mol}$.

Answer:

D) 33.2 mol