Using your knowledge of m/v = g/mL, you can start by putting that in the equation as:

And you know that the volume is 25 mL. So you could put this into the equation as:

And you also know that the molar mass of KCl is 74.55g (K = 39.1 g/mol and Cl = 35.45 g/mol. Add them together to get 74.55g/mol).
We can then put this in the equation as:

Then, we can mulitply them all together:

And now we know that
there are 0.01 moles of KCl in the sample.
Answer: There are numerous things that a Home Health Aide should not do when giving foot care to a client with diabetes.
Explanation:
Since there were no choices to choose from and so many things that should never be done, I will make a small list of things for you.
1: Never put anything in the client's shoes, as this can cause a blister or cut.
2: Never soak the client's feet in hot water; only use warm water.
3: Never cut the toenails too short and always cut them straight across and file after.
4: Never moisturize between the toes, always moisturize the feet instead.
5: Never treat the calluses or corns yourself, only a DR should perform this.
6: Never scrub patients' feet with anything other than a sponge or soft cloth. Always pat the feet dry.