Test Chemistry Knowledge Test (10 que 1. The reaction A product follows second-order and has a rate constant of 0.540M1s1 At what time will concentration of species A be 31 of its original concentration? 0.925s 1.23s 3.70s 5.55s 5.55s 2. Consider the equation for dissolving calcium hydroxide: Ca(OH)2Ca2+ (aq) +2OH(aq) What is the solubility in water if the Ksp is equal to 6.5106 ? 0.012M 0.019M 1.8103M 2.5103M How many moles of HCl are produced? 1.8103M 2.5103M 3. In the reaction PCl5+4H2OH3PO4+5HCl excess water reacte with 5.00g of PCl5. The molar mass of PCl5 ia 208.24g/mol. How many moles of HCl are produced? 0.0240mol 0.120mol 0.0960mol 0.0048mol What is the name of the hydrocarbon in the image? (Z)-3-ethylhex-2-ene (E)-3-ethylhex-2-ene (Z)-4-ethylhex-4-ene (E)-4-ethylhex-4 ene 5. CaO is mixed in H2O to produce Ca(OH)2. What ia the name of the product? Calcium oxide Calcium (II) oxide Calcium hydroxide Calcium (II) hydroxide 6. A compound with a molecular weight botween 190.196g/mol is determined to have 49.48% carbon, 5.19% hydrogen, 28.85%N, and 16.47% What is the empirical formula of this compound? C4H5N2O C8H10N4O2 C4H0N2O C1H12N4O2 101.960/mol What is the limiting reactant and what is the maximum theoretical molee of the product? As, 0.0G2d moles from Al A. 0.105 moles from Al Oa,0.0533 molos trom Q2 O., 0.0000 moles from O2 8. What is the hybridization and the bond angle in SO ? ? 5P2+120 sp2+120x 293+=109.5= sin7109.5 9. Which of the following amino acids has a polar aide chain? 9. Which of the following amino acids hos a polar side chain? Leucine (L) Methionine (M) Tyrosine (Y) Vatine (V) 10. Iron has an atomic number of 26 and has an electronic configuration 1s22s22p63s23p64s23d4. How many d oloctrons are present in Fe2+ ? 2 4 8 8