1. **State the problem:** Calculate the number of moles present in 700 mL of 0.250 M SrBr2 solution. 2. **Formula used:** 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:** $$\text{moles} = 0.250 \times 0.700 = 0.175$$ 6. **Interpretation:** There are 0.175 moles of SrBr2 in 700 mL of 0.250 M solution.