write the chemical equation obtained when reactions x and y are added together to produce the reaction z. include the states of matter. remember to write the lowest possible numeric values for the coefficients.

How did planetesmals form planets? a. they broke apart into smaller chunks.b. they collided and stuck together.c. they cooled and pulled ice together.d. they began to rotate.

If a molecule with a molecular formula of c13h18 is treated with an excess of h2 in the presence of finally divided pt metal under conditions required for maximum hydrogenation of the molecule to give a molecule with a formula c13h24, how many rings are in the molecule?

What is a difference between a mixture of elements and a mixture of compounds