Acompound is found to have a percent composition (by mass) of 85.63% c and 14.37% h. the molar mass of the compound was found to be 42.0 g/mol. which of the following is the empirical formula and the molecular formula, respectively a. c2h6 and c3h9 b. ch2 and c3h6 c. ch and c3h3 d. ch3 and c2h6 e. c2h3 and c4h6

The image compares the arrangement of electrons in two different neutral atoms. a figure labeled atom q has a shaded sphere at the center of three concentric circles. the innermost circle has two black spheres. the middle circle has six black spheres. to the left of this figure is another figure labeled atom p. atom p has a shaded sphere at the center of three concentric circles. the innermost circle has two black spheres. the middle circle has seven black spheres. which of the following best explains the position of the two atoms in the periodic table? atom p has an estimated zeff of 7 and is therefore to the left of atom q, which has a zeff of 6. atom p has an estimated zeff of 7 and is therefore to the right of atom q, which has a zeff of 6. atom p has an estimated zeff of 5 and is therefore below atom q, which has a zeff of 4. atom p has an estimated zeff of 5 and is therefore above atom q, which has a zeff of 4.