answer and explain 31 through 39?

word or expression that, of those given, best completes the statement or answers the question. Some questions may require the use of the 2011 Edition Reference Tables for Physical Setting/Chemistry. 31 Which electron configuration represents the 37 Which chemical bond is most polar? electrons of a phosphorus atom in an excited (1) a O-H bond in H2O state? 2) a S-H bond in H,S (1) 2-8-5 (3) 2-7-6 (3) a Se-H bond in H,Se (2) 2-8-6 (4) 2-7-4 (4) a Te-H bond in H, Te 32 A 26.7-gram sample of which element has 38 What is the amount of heat required to melt a volume of 3.00 cubic centimeters at room 43 grams of solid magnesium oxide at its melting temperature? point? The heat of fusion is 1.9 x 103 J/g. (1) Cr (3) Nb (1) 2.3 X 10-2 J (3) 8.2 X 104 J (2) Cd (4) Ni (2) 4.4 X 101 J (4) 3.4 X 105 J 33 Which element is a nonmetal and solid at STP? 39 Given the diagram of a laboratory apparatus: (1) lead (3) sodium (2) nitrogen (4) sulfur Thermometer Water Glass out 34 What is the molecular formula for tubing CH,CH,COOCH3? (1) CHO (3) CHO (2) CH,02 (4) CHO2 Rubber stopper Condenser Cork 125-mL 35 A substance conducts electricity in the liquid Florence flask stopper phase but not in the solid phase. This substance Salt water Water can be classified as Beaker (1) covalent Hot plate (3) metallic (2) ionic (4) molecular 36 A student measured the melting point of a sample of gallium to be 309 K. Based on Table S, Water In which numerical setup can be used to calculate the student's percent error? This apparatus is used for which process? (1) 303 K 303 K 309K - 303 K x 100 (3) 309K X 100 (1) filtration 3) chromatography (2) distillation (4) electrolysis (2) 309 K -303K 309 K X 100 (4) 309K 303 K X100