Based on the chemical equation, use the drop-down menu to choose the coefficients that will balance the chemical equation: (
)O2 → (
)O3

One does not belong why? ice, gold ,wood ,diamond and table salt

In the cathode ray tube experiment, j. j. thomson passed an electric current through different gases inside a cathode ray tube in the presence of an electric field. in which two ways did this experiment change scientists’ understanding of the atom?

Which element has the lowest electronegativity? calcium(ca) gallium(ga) selenium(se) bromine(br)