Magnesium reacts with hydrochloric acid as shown by the equation: Mg(s) + 2HCl(aq) MgCl2(aq) + H2(g).

a)What volume of hydrochloric acid of concentration 2 moles/dm3 reacts exactly with 0.1 mole of magnesium?
b)What mass of hydrogen is produced when 0.1 mole of magnesium reacts with excess acid?
c)What volume of hydrogen, at RTP, would be formed if 0.24 g of magnesium reacted with excess acid?

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.

State the formula for density in words and mathematical symbols

Suppose that during that icy hot lab 65,000 j of energy were transferred to 450 g of water at 20°c what would have have been the final temperature of the water