*PLEASE HELP FAST* Magnesium sulfate can occur in many different hydrates with the generic formula of MgSO₄ ‧ XH₂O. The hydrate was weighed initially to have a mass of 3.48 g. The hydrate was then heated in a crucible over a flame for five minutes. It was weighed again and had a mass of 2.18 g. How many moles of magnesium participated in the reaction?Immersive Reader
(2 Points)
2.18
0.018
1.30
0.036

Joan writes four numbers on the board in standard form, and then she writes their scientific notation

For each of the following compounds, write the formula then predict whether it would be a strong, weak, or non-electrolyte when placed in di water. for the ionic compounds only, put (s) or (aq) after the forrmula formula strong, weak or non electrolyte? a calcium hydroxide b. silver carbonate c. lead(ii) sulfate d. phosphorus trifluoride e. sodium phosphide f barium sulfate g. strontium acetate h. zinc nitrate

The number of neutrons is equal to the atomic number minus the atomic mass. a. true b. false