What is a compound? a poly element pure substance a homogenous mixture a single element pure substance a heterogeneous mixture

C3h8o3 - glycerol major species present when dissolved in water

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

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