If a building is too humid, what harmful substance may be stored there?

An observation that requires measurement is called quantitative observable or qualitative

Find the mass, in grams, of 5.00*10^23 molecules of f2

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