Figure 1.01a: (a.)The surface of a single grain of table salt.

CRS Question, 6–30

QUESTION (continued)

1. Subtract the products’ enthalpy change values from the reactants’ enthalpy change values, then add this to –265 kJ.

2. After multiplying the enthalpy change values by the correct mole coefficients, add the resulting products’ values and the value for the H2SO4 to –265 kJ.

3. Divide each known enthalpy change values by the mole coefficients to get the values per mole, then subtract the products’ values from –265 kJ, and finally subtract the value for the H2SO4 from that.”

4. After multiplying the enthalpy changes by the correct mole coefficients, subtract the resulting values of the products from

–265 kJ, add the value for the H2SO4, and then multiply by –1.