Use the standard reaction enthalpies given below to determine ΔH°rxn for the following reaction:                 4 SO3(g)  →  4 S(s) + 6 O2(g)                        ΔH°rxn =  ?Given:                SO2(g)  →  S(s) + O2(g)                                  ΔH°rxn = +296.8 kJ                2 SO2(g) + O2(g)  →  2 SO3(g)                     ΔH°rxn = -197.8 kJ

Give the hybridization for the Br in BrF5. 

The molecular weight of a gas that has a density of 7.10 g/L at 25.0 °C and 1.00 atm pressure is ________ g/mol.

An atom of the most common isotope of gold,  197Au has ________ protons, ________ neutrons, and ________ electrons.

How many mg does an 830 kg sample contain?

An atom of the most common isotope of gold,  197Au has ________ protons, ________ neutrons, and ________ electrons.

Use the standard reaction enthalpies given below to determine ΔH°rxn for the following reaction:                 4 SO3(g)  →  4 S(s) + 6 O2(g)                        ΔH°rxn =  ?Given:                SO2(g)  →  S(s) + O2(g)                                  ΔH°rxn = +296.8 kJ                2 SO2(g) + O2(g)  →  2 SO3(g)                     ΔH°rxn = -197.8 kJ

Of the following elements, ________ has the most negative electron affinity.

Give the hybridization for the Br in BrF5. 

The molecular weight of a gas that has a density of 7.10 g/L at 25.0 °C and 1.00 atm pressure is ________ g/mol.