4. Find the molar concentration of barium ions when a 120.0 mL of 0.0500 mol/L aqueous barium nitrate solution is mixed with 150.0 mL of 0.0250 mol/L solution of barium
carbonate?

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.

This classification of drug typically changes the brain's chemistry and reduces its ability to create its own endorphins.

A50.0g sample of liquid water at 0.0 c ends up as ice at -20.0 c. how much energy is involved in this change?