What was the process that marie curie used to turn 8 tons of rubble into 1/5 of a teaspoon of radium?

a) she pounded it with a sledgehammers until it liquified.

b). she boiled, coaxed, and reduced it over 4 years

c) she took four years to get the materials to her lab, and by then, it had liquified on its own

Darla claims that the first periodic table developed by mendeleev was not completely accurate, so it is not useful at all. harmony argues that it establish the periodic table we use today, making it more credible. who is correct and why? darla is correct, because a model that has any mistakes should be thrown out. darla is correct, because a good model would not need to change. harmony is correct, because mendeleev’s model had all of the information correct in the first version. harmony is correct, because mendeleev’s model made predictions that came true.

If two objects at different te,peraure are in contact with each other what happens to their temperature

Which material burns faster? metal aluminum