The average US home uses approximately 7650 kWh (kilowatt-hours) of energy in one year. What amount of NaCl would one need to power a household for one year if delta Hfusion for NaCl is 802.0 kJ/mol? State the answer in tons. The following conversions will be useful: 1 kWh=3.60*10^6 J, 1 kg=2.20 lbs, and 1 ton=2000 lbs.