How many moles of calcium atoms do you have if you have 7.88 × 10²¹ atoms of calcium. (The mass of one mole of calcium is 40.08 g.)

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