Magnesium oxide breaks apart to form magnesium and oxygen gas. If the reaction creates 12.2 g of magnesium and 8.0 grams of oxygen, how many grams of magnesium oxide were there initially? Explain why you were expect this mass.

Drive down any three characteristic of modern periodic table

The solid xy decomposes into gaseous x and y: xy(s) m x(g) + y(g) kp = 4.1 (at 0 °c) if the reaction is carried out in a 22.4 l container, which initial amounts of x and y will result in the formation of solid xy?

The comparison of the number of atoms in a copper coin the size of a penny with the number of people on earth is made to illustrate which of the following? a. that atoms are indivisible b. that atoms are very small c. that atoms are very large d. that in a copper penny, there is one atom for every person on earth