Mercury is in the 80th position in the periodic table. How many protons does it have?

What happens to atoms and chemical bonds during a reaction?

Clothes dryer uses about 7 amps of current from a 240 volt line. how much power does it use?

An ice-making machine inside a refrigerator operates in a carnot cycle. it takes heat from liquid water at 0.0 degrees celsius and rejects heat to a room at a temperature of 19.2 degrees celsius. suppose that liquid water with a mass of 76.3kg at 0.0 degrees celsius is converted to ice at the same temperature. take the heat of fusion for water to be l_f = 3.34*10^5 j/kg.how much energy e must be supplied to the device? express your answer in joules.