1. **State the problem:** Calculate the number of moles present in 700 mL of 0.250 M SrBr2 solution. 2. **Recall the formula:** Molarity (M) is defined as moles of solute per liter of solution: $$ M = \frac{\text{moles of solute}}{\text{liters of solution}} $$ 3. **Rearrange the formula to find moles:** $$ \text{moles of solute} = M \times \text{liters of solution} $$ 4. **Convert volume from mL to L:** $$ 700\ \text{mL} = \frac{700}{1000} = 0.700\ \text{L} $$ 5. **Calculate moles:** $$ \text{moles} = 0.250\ \text{M} \times 0.700\ \text{L} = 0.175\ \text{moles} $$ 6. **Interpretation:** There are 0.175 moles of SrBr2 in 700 mL of 0.250 M solution.