A sample is known to be 50% gold that has been mixed with one other element. The entire sample has a density of 13.22. What element makes up the other 50% of the sample?

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?

Convert .347 kilometers to miles show your work

To separate a mixture of hard candies nd marbles the most efficient method would be