Chem 121-Prody Exam IJanuary 25, 2002 Name_____________Show ALL your work. Use the correct number of significant figures in calculations. Goodluck!1. (6 points) Name the following (spelling counts!):a. S________________ b. F_______________ c. Mn________________ d. Be _________________2. (10 points) Perform the following conversions:a 4.51 x 106 ng = ______________gb. 7.97 µL = _______________mLc. 282 cm3 = ______________mm33. (10 points) Last summer in Bellingham it was pretty hot. Meanwhile, at the sametime, your professor was in Spain where it was a sizzling 44C. What was thetemperature in Spain in F?4. (4 points) An atom with the same number of neutrons as 59Co is: (circle the correct choice)a) 59Ni b) 57Co c) 60Cu d) 58Fe e) 58Ni5. (14 points) Complete the following table:Symbol# #neutronsprotons#electrons 1735Cl6 6 812 10 1235 36 4554 54 776. (5 points) Write and balance an equation for the combustion of butane, C4H10.7. (15 points) The two naturally occurring isotopes of rubidium are rubidium-85 with anatomic mass of 84.91179 amu and rubidium-87 with an atomic mass of 86.9091 amu.What are the percent natural abundances of these two isotopes?8. (16 points) Fill in the table:name formulaa. MgF2b. H2Oc. CH4d. LiOHe. calcium nitratef. ammoniag. hydrochloric acidh. ammonium sulfate9. (10 points) How many seconds would it take to send a radio signal from the earth tothe moon, a distance of 2.4 x 105 miles, if the signal travels at the speed of light, 3.0 x 1010cm/sec?10. (10 points) Balance the following equations:a. PCl5 + H2O H3PO4 + HClb. Ca3P2 + H2O Ca(OH)2 +
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