Under certain conditions, neon (ne) gas diffuses at a rate of 7.0 centimeters per second. under the same conditions, an unknown gas diffuses at a rate of 4.9 centimeters per second. what is the approximate molar mass of the unknown gas?

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