The enthalpy change for the reaction
Cls, graphite) + 1/2O2(g) --> CO(g) cannot be measured directly since some carbon
dioxide is always formed in the reaction.
It can be calculated using Hess's Law and the enthalpy changes of combustion of
graphite and of carbon monoxide.
C(s, graphite) + O2(g) --> CO2 AH=-394 kJmol-1
CO(g) + 1202(8) --> CO2 AH=-283 kJmol-1

Select the correct answer. which statement is true about a polarized object? o a. it gains electrons and becomes negatively charged. ob. it gains protons and becomes positively charged. oc. the number of positive and negative charges can be the same. od. it has to be a metal. o e. there is no change in the distribution of the charge in the object. reset next what

When you perform this reaction, what could remain at the end of the reaction? check all that apply. excess reactant aqueous copper chloride excess reactant aluminum oxygen product solid copper carbon dioxide product aqueous aluminum chloride water

Geothermal energy for industrial use is available almost anywhere. a.true b.false