Your grandmother is in the hospital and is put on a liquid diet. after examining her chart, a mistake is found stating that her weight is 500 kg. what is the equivalent weight in pounds

The question can be just restated as "what is the equivalent of 500 kg in Pounds".

For this we need to know how many pounds is one kilogram: it's about 2.2 pounds.

So 500 kilograms is 500*2.2 pounds, which is 1100 pounds (and a little more since one kg is a little more than 2.2 pounds).