Reactant p contains 50 j of energy, and reactant q contains 35.3 j of energy. the reactants combine to form product pq, which contains 104 j of energy. what is the energy transformation?

The chemical reaction based on the given above can be written as,
                       P + Q --> PQ
The energy in the left side of the equation will sum up to 85.3 J. That is the sum of the energy of P and Q. The energy in the right side of the equation is 104 J and is 18.7J more than that of the left side. This means that 18.7J of heat was absorbed during the process. 

the catch is that the top numbers are atomic masses the bottom numbers are the numbers of protons and electrons in an uncharged atom. they are the number of that atoms as you would find them on the periodic table. further, the numbers on the left are used to determine the missing numbers on the right

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer

A) the enthralling of formation for pure element in its standard state is always positivehope this : )