HW02-key-detail

HW02-key-detail - Chemistry 111 Homework #2 Due: September...

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Chemistry 111 Homework #2 Due: September 14, 2005 (Wednesday) 10:15 a.m. on Blackboard DO NOT ENTER UNITS UNLESS SPECIFICALLY ASKED 1. The S.I. unit (Système Internationale d' Unites) of mass is the (a) kilogram (b) gram (c) pound (d) meter (e) inch (f) not listed here 2. The S.I. unit of volume is the (a) pound (b) liter (c) gallon (d) cubic centimeter (e) cubic meter (f) not listed here Volume = (length) 3 ; SI unit of length = meter V = m 3 3. 1.000 Gm divided by 1.000 mm equals (a) 1.000 pm (b) 100.0 Gm (c) 1.000 x 10 6 mm (d) 1.000 x 10 6 Gm (e) 1.000 x 10 6 km (f) not listed here 1.000 ! 10 9 1.000 ! 10 " 3 = 1.000 ! 10 12 m = 1.000 Tm = 1,000 ! 10 9 m = 1,000 Gm = 1 ! 10 6 Mm = 1 ! 10 9 km = 1 ! 10 15 mm Note: Yes. The original wording of the problem gives a unitless answer. So the answer “(f) not listed here” is correct whether you operated in the spirit of the question or not. 4. Match the following prefix symbols for S.I. units with their prefixes and meanings. μ c D (a) mega- (A) 10 -2 T b F (b) tera- (B) 10 6 m f F (c) micro- (C) 10 -1 c f A (d) deci- (D) 10 -6 d d C (e) pico- (E) 10 -12 M a B (f) not in the list (F) not in the list To answer this problem in BlackBoard, fill in the blank associated with each symbol with
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Chemistry 111 2 Homework #2 / Fall 2005 the lowercase letter matching its prefix, ONE space, and then the uppercase letter matching its meaning. μ = micro = 10 –6 T = tera = 10 12 m = milli = 10 –3 c = centi = 10 –2 d = deci = 10 –1 M = mega = 10 6 5. Solder is an alloy (mixture of two or more kinds of metals), and different types have different relative amounts of lead and tin. One particular kind of solder has a melting point at 225 o C. Convert this melting point to the Farenheit scale. Enter your answer in Blackboard to 3 significant figures. ____ °F = 9 °F 5 °C ! ____ °C + 32 °F 9 °F 5 °C ! 225 °C + 32 °F = 437 °F 6. Convert the melting point of the solder in problem 5 to the Kelvin scale. Enter your answer in Blackboard to 3 significant figures. ____ K
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HW02-key-detail - Chemistry 111 Homework #2 Due: September...

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