Which of the following is not part of Dalton\'s atomic theory? a. Atoms combine in whole-number ratios b. Chemical reactions involve a rearrangemen c. All atoms of a given eleme d. to form chemical compounds. t of the atoms in the starting materials. nt have identical m ass and chemical properties All matter is composed of small indivisible particles called atoms. Atoms of one element can be changed to atoms of another element in a chemical reaction. e. 74. The correct formula for tetraphosphorus hexasulfide is: a. PS b. P5S6 c. P4S6 d. P5S7 e. P4S7 75. Consider the following reaction 4M13(g) + 702(g) ? 4NO2(g) + 6H20? The equilibrium constant expression is K= [NO2][II?/[NI13][02] a. Solution 73. e. Atoms of one element can be changed to atoms of another element in a chemical reaction. 74. c. P 4 S 6 75. d. K = [NO 2 ] 4 /[NH 3 ] 4 [O 2 ] 7 .