Question

10) Consider the following balanced e following balanced reaction. How many grams of water are required to form 75.9 g of HNO3? that there is excess NO present. The molar masses are as follows: H2O - 18.02 g/mol, HNO3 - 63.02 g/mol. A) 26.5 g H20 3 NO2(g) + H2O(1) -- 2 HNO3(aq) + NO(g) B ) 38.0 g H20 C) 10.9 g H20 D) 43.4 g H20 E) 21.7 g H20 11) A physical change A) occurs when iron rusts. B) occurs when water is evaporated occurs when propane is burned for heat. D) occurs when glucose is converted into energy within your cells. E occurs when sugar is heated into caramel. 12) In comparing the same two atoms bonded together, the the bond order, the length, and the the bond energy. A) greater, shorter, greater B) greater, greater, smaller C) greater, longer, greater D) greater, greater, greater E) smaller, greater, greater the bond 13) Which of the following involves delocalized it bonds? A) carbon tetrachloride (CCL) B) dichlorodifluoromethane (CF2Cl2) C) acetylene (C2H2) D) benzene (C6H6) E) ethylene (C2H4) 14) Which of the following are combustion reactions? 1) CH4 (8) + O2(g) - CO2 (8) + H20 (1) 2) CaO (s) + CO2(g) - CaCO3 (s) 3) PbCO3 (s) - PbO (s) + CO2 (8) 4) CH3OH (1) + O2(g) - CO2 (8) + H20 (1) A) 3 and 4 B) 1, 2, 3, and 4 C) 2,3, and 4 D) 1,3, and 4 3. and 4 E) 1 and 4 15) According to molecular orbital (MO) theory, the twelve valence electrons in the O molecule are distributed as follows: A) 10 in bonding MOs, 2 in antibonding MOs. B) 9 in bonding MOs, 3 in antibonding MOs. C) 7 in bonding MOs, 5 in antibonding MOs. D) 8 in bonding MOs, 4 in antibonding MOs. E) 12 in bonding MOs, 0 in antibonding MOs.

Answer 1

Answers :- 3002 g + H2O & According to 18029 reactos : 2 HNO3 er nog 126.oug 75.99 Given : 29 . 126.ong tinag require 18-02g tho " 75-9 g Hrey will require = 18-02 775-9 g tro 126.04 2 = 10.851 g n20 - Answer: [ 10.9g the A physical Change B) occurs when water is evaporated ② n comparing the same two atoms bonded together, the greater the band order, the shorter the bond length and the greater the band eness . Answer: (A) greater, shorter, greater

® D) bensare conce) A - % Combusters means burning in presence of O2 Answer: IE) 1 and a 02 : Fatal e = 16 ves). claro?, ved mones, alpes)acha)oraba, Filem) erickej . Answer: (D) & in bonding mos, & in antibonding mos)