a 3.5kg shovel is left outside through the winter. The shovel now orange with rust, is rediscovered in the spring. Its mass is 3.7kg. How much oxygen combined with the iron

Which of the following is a conclusion that resulted from ernest rutherford’s scattering experiment? (will mark brainliest) a. the nucleus is negatively charged b. the atom is a dense solid and is indivisible c. the mass is conserved when atoms react chemically d. the nucleus is very small and the atom is mostly empty space