An unknown compound has a percent composition of 52.10% potassium, 15.8% carbon, and 32.1% oxygen. the molar mass of the compound is 150.22 g/mol. what is the empirical formula and the molecular formula of this compound?

The p sub shell can hold up to 8 electrons in an atom. true or false?

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?

The diagram below shows a cell placed in a solution.a cell is shown placed inside a beaker. it is labeled cell. the solution inside the beaker is labeled 40% salt solution and the solution inside the cell is labeled 20% salt solution.only water is allowed to move in and out of the cell. what will most likely happen to the cell? it will expand as water moves out of it. it will shrink as water moves out of it.it will expand as water moves into it. it will shrink as water moves into it.