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QUESTION 6 Which represents the greatest mass? O 1.0 mol Rb O 1.0 mol Ti O...
QUESTION 6 Which of the following has the greatest number of atoms? A. 1.0 mol He B.0.60 mol H2 C.20 g potassium D.8.5 mL H20 (Density of H20 = 1 g/mL) E 22.6 g KMnO4
of Fe, K, CI, P and Rb, which would you expect to have the greatest electron affinity? Select one: a. Rb O b. Ock d. Fe o e.pl
Question 5 1 pts Which of the following contains the greatest mass of oxygen atoms? O 0.5 mol CoSO4.7H2O 2.1 mol KHSO4 1.1 mol KCr 07 2.1 mol H202 2.1 mol Na S203
Question 6 (5 points) Of the following solutions, which has the greatest buffering capacity? O 0.121 M HF and 0.667 M NaF O 0.821 M HF and 0.909 M NaF 0.100 M HF and 0.217 M NaF They are all buffer solutions and would all have the same capacity.
Question 4 1p Which equilibrium constant represents a reaction that favors the formation of the products to the greatest extent? O keq = 100 o keq - 1.0 x 108 o keq - 1.0 x 10-18 O keq - 1.0 x 10-2
Question 8 1 pts Which equilibrium constant represents a reaction that favors the reactants to the greatest extent? O keq = 1.0 x 10-3 o Keq=100 O keq = 1.0 x 10-18 Keq = 1.0 x 10 Previous
QUESTION 11 22.6 g of Cu represents how many moles? O 0.356 mol 2.81 mol O 1.44 x 103 mol O 1.36 x 1025 mol O none of these QUESTION 12 3.83 g of Ca represents how many moles? O 0.0956 mol O 1.54 x 102 mol O 2.31 x 1024 mol 10.5 mol O none of these Il Proctorio is QUESTION 13
of 40 > Which of these gases occupies the greatest volume at standard temperature and pressure (STP)? O 0.685 mol Ar O 0.685 mol SF 0.685 mol NH, All four gases occupy the same volume at STP. 0.685 mol Cl,
whats the answer Ans 9.3 L 5) A mixture of 1.0 mol He and 1.0 mol Ne are at O"C and 1 atm pressure in a rigid container Which of the following statements are TRUE and which are FALSE? Briefly explain each of your answers. (6 pts.). A) Both gases have the same average kinetic energy B) Both gases contribute equally to the pressure of the mixture under these conditions. C) Both gases have the same molecular speed.
QUESTION 4 What is the molar mass of nitroglycerin, C3H5(NO3)3? O 199 g/mol O 179 g/mol O 227 g/mol O 185 g/mol QUESTION 5 The number of moles in 37.80 g of C2H60 (molar mass = 46.1 g/mol) is 1.575 x 100 9.072 x 102 1.743 x 103 8.200 x 10-1 QUESTION 6 Determine the percentage composition (by mass) of oxygen in H2SO4. 65.25 %