During a recent winter month in sheboygan, wisconsin, it was neccessary to obtain 3500 kwh of heat providd by a natural gas furnace with 98 % efficiency to keep a small house warm (the effiiency of a gas furnace is the percent of the heat produced by combution that is transferred into the house).
(g) although electriccity is 100% efficient in producing heat inside a hous, producing aand distribution of electricity is not 100% efficient. the efficciency of prduction and distribution of electricity produced in a coal - fired power plant is about 40% a certain type of cola provides 2.2 kwh per pound upon combustition. what mass f this coal inn kilograms will be required to produce the electrical energy neccessary to heat the house if the efficiency of generation and distribution is 40%?