How many moles of ethane, C2H6, are present if the reaction conditions are 305 K, 1.3 atm, and 2.5 L of ethane, C2H6

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.

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Design techniques and materials that reduce the negative environmental impact of a structure are referred to as