# 34 how many molecules of xef 6 are formed from 129 l

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34. How many molecules of XeF6are formed from 12.9 L of F2(at 298 K and 2.60 atm)according to the following reaction?Assume that there is excess Xe.Xe(g) + 3 F2(g) → XeF6(g)a.7.29 × 1023molecules XeF6b.1.37 × 1023molecules XeF6c.1.21 × 1023molecules XeF6d.8.25 × 1023molecules XeF6e.2.75 × 1023molecules XeF635. Lead is the least toxic metal ion to fish compared to zinc, copper, and mercury ions. Fishcan tolerate a lead concentration slightly above 0.850 mM. What is 0.850 mM in ppm?Assume the density of the water is 1.00 g/mL.a.352 ppmb.0.352 ppmc.0.176 ppmd.176 ppme.83 ppm
36. Which of the following would increase the volume of a balloon of helium?
37. What is the kinetic energy of a 2000-lb car traveling at 59 miles perhour? (1 lb = 0.4536 kg, 1 mi = 1.609 km)J
38. The titration of 80.0 mL of an unknown concentration H3PO4solution requires 126 mLof 0.218 M KOH solution.What is the concentration of the H3PO4solution (in M)?
39. A sample of N2effuses in 255 s.How long will the same size sample of Cl2take toeffuse?a.645 sb.155 sc.388 sd.406 se.247 s
40. Determine the concentration of a solution prepared by diluting 20.0 mL of a 0.200 MNaCl to 250.0 mL.
BONUS:41. Dr. Turnpenny wants to make his own mirror by putting a silver lining on glass with thefollowing basic reaction.C6H12O6+ [Ag(NH3)2]+→ Ag + C6H11O7-+ NHIf 12.0 mL of a 0.250 M glucose solution, C6H12O6, is used, how thick, in μm, of a silverlining will there be if the glass is a circle 5.00 cm wide and silver has a density of10.49 g/cm3?3m
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