Question 18 (1 point) Aqueous solutions of two fictitious ionic compounds, X2Y and ZW2, react in a double displacement reaction.
What are the products?
OXW and ZY
XW and ZY
XW and ZY2
X2Z and YW2

Does anyone know a lot about how to: - calculate mass of magnesium metal - calculate the actual yield of magnesium oxide - calculate the theoretical yield of mgo - calculate the percent yield of mgo - determine the percent yield of mgo - determine the average percent yield of mgo i had to do an online lab and its asking these questions but i have no idea where to start or how to be able to find these things. i can post the chart of the data from the lab or if you can tell me exactly how i can find each.

Which is the layer underground where all empty spaces are filled with a combination of air and water ?

Which of the following statements is true? a. elements in the last period are radioactive. b. atomic weight is the same as atomic mass. c. elements in the same group have the same number of electron shells. d. atomic number equals the number of neutrons in the nucleus of an atom.