Distillation is the process of seperating liquids by using . A: a catalyst
B: a centrifuge
C: precipitation and transpiration
D: evaporation and condesation

Please answer this quickily (who ever answers this correctly and answers it first gets brainliest)

What are the percent by mass of copper in penny lab

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.

When a scientific theory has been tested and proved by the scientific community, it becomes a law