A student calculates the density of iron at STP to be 8.956 g/cm. What is the Percent Error

How will the emission of an alpha particle affect the atomic number of an atom

What effect might melting sea ice have for people who live in coastal areas?

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?