Conte como, onde, quem foi os primeiros a usar e descrever sobre as maquinas simples Preciso de ajuda não consegui achar essas coisas em si.

Ase your answer to this question on the information below.hydrocarbons and fissionable nuclei are among the sources used for the production of energy in the united states. a chemical reaction produces much less energy than a nuclear reaction per mole of reactant.the balanced chemical equation below represents the reaction of one molecule of a hydrocarbon with two molecules of oxygen.chemical equation: ch4 + 2o2 → co2 + 2h2o + 1.48 × 10−18 jthe nuclear equation below represents one of the many possible reactions for one fissionable nucleus. in this equation, x represents a missing product.nuclear equation: write an isotopic notation for the missing product represented by x in the nuclear equation.

How heavy is thanos? a) 3000 lbs b) all of it c) the price of tea in china d) heavy enough

If 90.0 grams of ethane reacted with excess chlorine,how many grams of dicarbon hexachloride would form