Answer:
Explanation:
Hello,
In this case, we can consider the following chemical reaction for the oxidation of copper which only occurs at high temperatures:
In such a way, for 0.032 grams of copper, the following grams of copper (II) oxide (black product) are yielded:
Therefore, the percent yield is:
Best regards.
It is negative because the enthalpy of the products is greater than the enthalpy of the reactants.
pb am 207.19 amu
pb206, pb207and pb208
B,C,F