Question

9.) copper (ii) sulfate (1 point)$ce{cu_{2}s_{2}}$$ce{cuso_{4}}$$ce{cu_{2}(so_{4})_{2}}$$ce{cus}$

Explanation:

Step1: Identify ion charges

Copper(II) = $\text{Cu}^{2+}$, sulfate = $\text{SO}_4^{2-}$

Step2: Balance charge

Equal positive/negative charges: 1 $\text{Cu}^{2+}$ pairs with 1 $\text{SO}_4^{2-}$

Step3: Write formula

Combine ions into neutral compound.

Answer:

B. $\text{CuSO}_4$