Classify each of these statements as always true, at, sometimes true, st, or never true, nt. 1. a mole of a pure substance contains 6.02 x 1023 atoms. 2. the representative particle of a compound is a molecule. 3. a mole of ccl4 is composed of one atom of carbon and 4 atoms of chlorine. 4. one mole of gas occupies 22.4 l 5. the formula of methane is ch4. if methane contains 75% carbon, then 100 grams of methane contains 25 grams of carbon. 6. the formula for methane ch4 is both an empirical and molecular formula. 7. the empirical formula of c6h12o6 is c2h4o2.

For questions 1 and 2, consider the following experimental data.hydrogen emission lines were detected at the following wavelengths (in nm): 121.6102.697.395.093.8question 1use the electromagnetic radiation classifications below and figure 1-1 in the introductory information for this lab (in the lab manual) to determine the nf value for the experimental data provided? wavelength, ? (nm) 650 700 550 600 400 450 500 visible spectrum wavelength, ? (m) 11 10 3 10 10 10 8 10 5 10 10 -10 10 9 10 10 10 10 -12 10 microwave radio infrared x-ray ultraviolet gamma 1020 1019 1018 1 1016 015 1014 01 12 109108 frequency, v (hz)a.1b. 2c. 3d. 4e. 5question 2using the data for the emission line with the longest wavelength, the known value of nf (from question 1 in this prelab), and the value of ni (deduced from the ? and nf values) calculate the rydberg constant for hydrogen (rh) in units of m-1.a) 1.097 x 10-11 m-1b) 5.921 x 107 m-1c) 1.097 x 10-2 m-1d) 9.252 x 106 m-1e) 1.097 x 107 m-1