0.20 g samples of sodium, potassium and calcium are added to separate beakers of water. In which case would the most hydrogen be evolved? In this case, what would be the residue if we evaporate the solution to dryness? What would be the mass of the residue?
(answer is calcium, calcium hydroxide, 0.37g) (i need working out)
- jopaLv 59 years agoFavorite Answer
u should know the reaction, if u dont: drop out. once u know the reaction u can convert to moles to solve both questions