Aperson who has a mass of 60kg run up a flight of stairs 12m high in 20 seconds what is the weight of the person

132 pounds.  As you stated, their weight is 60 kg and 60 kg = 132.77 pounds

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.

> b takes place in the gas phase in an isothermal tubular reactor. the feed is one mole of a per one mole of c, an inert. the entering temperature and pressure are 427°c and 10 atm, respectively. the gas constant r = 0.08206 atm · l/mol · k.