If 28.0 grams of Pb(NO3)2 react with 18.0 grams of Nal, what mass of Pbl2 can be produced? Pb(NO3)2 + Nal → Pbl2 + NaNO3
27.7 g Pbl2
39.0 g Pbl2
44.8 g Pbl2
56.1 g Pbl2

All the elements are arranged by melting points on the periodic table. in row they go from metals to gasses. in the row from sodium to argon, sodium is more reactive than the one on its right, magnesium.

It is a mixture. simply put, a compound must be pure, that is, of only one chemical structure and composition. a mixture is made of different chemical substances (i.e. elements, molecules, compounds) that are not chemically bonded to each other, but instead physically grouped together, as in the case of gasoline (a homogeneous solution).

The higher the temperature, the increased rate constant for a reaction.(positive linear association)