You need to calculate the enthalpy change (AHO) of the reaction A+B → C. How can the enthalpies given for the reaction steps below be combined to
give the overall change in enthalpy?
2A+BD
C+AD
AH2
O A. AH AH , +AH2
O B. AHO E AH, AH2
C. AH = AH - AH2
O D. AHORAH 2-AH

Which of the following is always a reactant in a combustion reaction? oxygen nitrogen hydrogen carbon

In a ni-cd battery, a fully charged cell is composed of nickelic hydroxide. nickel is an element that has multiple oxidation states. assume the following proportions of the states: nickel charge proportions found 0 0.17 +2 0.3 +3 0.33 +4 0.5 (a) determine the mean of the nickel charge. enter the answer to 2 decimal places.(b) determine the cumulative distribution function of nickel charge.

Can someone me out on this question for my national 5 chemistry homework