Assuming that magnesium and oxygen will react completely with one another, predict the mass of magnesium oxide that will be produced when 17 g of magnesium reacts with 5.6 g of oxygen.

If a reactant was removed, did the new equilibrium system shift to make more reactants or more products?

Which part of earth’s surface receives the most direct rays from the sun? a) equator b) ocean c) poles d) mountains

100 grams of molten lead (600°c) is used to make musket balls. if the lead shot is allowed to cool to room temperature (21°c), what is the change in entropy (in j/k) of the lead? (for the specific heat of molten and solid lead use 1.29 j/g⋅°c; the latent heat of fusion and the melting point of lead are 2.45 × 104 j/kg and 327°c, respectively.)