If, in the reaction below, 4 grams of H2O produces 0.67 grams of HF what is the % yield?

The net force is 100

If this is a true or galse then its true but if not then what is the question?

Well you can immediately rule out a and d because if a metal were to lose or gain protons, then it would become a different element all together. the answer here is b because the positive symbol with a number refers to how many electrons the metal can give away to become stable.