Conversion Factors: Practice: Please give the 2 possible conversion factors for each of the following (the first 6 are from above) 1 10 f 1p OR W OR

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1 Unit Equatins: Practice: Please set up unit equatins f each f the fllwin etric relatinships a) Scville (Sc) and kilscville (ksc) k = x, s ksc = x Sc b) le (l) and illile (l) = x -, s l = x - l c) eacalie (Mcal) and calie (cal) M = x, s Mcal = x cal d) farad (f) and picfarad (pf) p = x -, s pf = x - f e) iawatt (GW) and watt (W) G = x, s GW = x W f) nantesla (nt) and tesla (T) n = x -, s nt = x - T Cnversin Facts: Practice: Please ive the 2 pssible cnversin facts f each f the fllwin (the first are fr abve) a) Scville (Sc) and kilscville (ksc) b) le (l) and illile (l) c) eacalie (Mcal) and calie (cal) d) farad (f) and picfarad (pf) e) iawatt (GW) and watt (W) f) nantesla (nt) and tesla (T) ) 4.84 J = i C h) 0.8 = i) li K = 8.4 J j) 8 iles = hur Sc k Sc ksc Sc - l l - l l - l l - l l - f p f - pf f W G W GW W - T nt - nt T 4.84 J i C i C 4.84 J J l i K l i K 8.4 J 8 i hr hr 8i Si Fis and Cnversin Facts: Practice: F each f the fllwin, state the syste f easure f each unit, the quality easured by each unit, and then ive the nuber f si fis in the cnversin fact. = atch, and = n atch a) J = 0.20 cal J = etric enery, cal = standard enery, 4 s.f. (different systes) b) k =.0x yards km = etric distance, yd = standard distance, s.f. (different systes) c) = x - = etric vlue, = etric vlue, infinite s.f. d) =. = etric vlue, = etric ass, s.f. (different qualities) e) 5280 ft = ile ft = standard distance, ile = standard distance, infinite s.f. f) k = 2.20 lb k = etric ass, lb = standard ass, s.f. (different systes) ) 5 iles = hr iles = standard distance, hr = standard tie, 2 s.f. (different qualities) h) = al = etric vlue, al = standard vlue, 5 s.f. (different systes) i). Au = le Au AU = etric ass, hr = etric cunt, 5 s.f. (different qualities) j) M = x M = etric vlue, = etric vlue, infinite s.f.

2 Usin Cnversin Facts: Practice: Perf the fllwin cnversins c a) 28.0 c c = x -2 c = x -2 c 28.0 c = c k k b) 00. k k = x k = x 00. =.000 k k c).28 = x - = x -.28 = 280 d).8 = x - = x -.8 = 80 d d e) 4.5 d d = x - d = x = 45 d d M M f) M M = x M = x 5 =.2 M M kj J J ) 2. kj t J k = x kj = x J 2. kj = 200 J J kj kj h).4x p p p = x - p = x p =.4 p p i).8x 4 n n = x - n = x - n n n =.8 n j) 8.54 c c = x -2 c = x -2 c c 8.54 c = 854 c 2 k) 25.0 = x - = x = l) 22.4 μ μ = x - μ = x - μ μ 22.4 μ = 2.24 μ ) 0.5 Gs s G = x Gs = x s Gs s s Gs s Gs =.5 s Gs n) 5.5 k k = x k = x k k 5.5 k = 5500 k ) 0.48 T T = x T = x T T 0.48 T = 4.8 T p).0x 5 μ μ μ = x - μ = x μ = 0.0 μ μ Okay, here are se f yu t try: ) 582 icrliters t dekaliters 2) 4.85 terabytes t kilbytes ) Hw any fetsecnds in 22. illisecnds da 582 μ = 5.82 μ B kb 4.85 TB = 4.85 TB B s fs 22. s = 2.2 fs 5 s s da kb

3 4).8x -2 earas t centiras? 5) 50.8 G p ) 24 c k ) 45.4 d M 8) 50 k μ ) 28. M ).4 μ c ).42 p n ) 5.2x -4 T k c.8 M =.8 c M p G =.508 p G k 24 c = 2.4 k c M 45.4 d = 4.54 M d μ 50 k = 5. μ k 28. M = 2.8 M c.4 μ =.4 μ n.42 p = 0.42 n p 4 k T = 5.2 k T Cnversin between systes f easure: Practice: (use the SI Units and Cnversin Facts table in yur bk, the cnversin table I ave yu, t d these) ) Cnvert k t unces 2) What is the equivalent f 5 n in anstrs? ) Hw any liters are there in.5 pints z 4 k =.4 z k 28. A 5 n = 50 A n al.85.5 pt =.02 8 pt al 0.85 k 2 4) 0.5 tns is equal t hw any k? 0.5 tn =.8 k tn 5) Hw any au are in.82x k au punds?.82 lb = au 4 lb k.0 μ ) What is the distance in μ f 8.00 ft? 8.00 ft = 2.44 μ.28 ft 5280 ft ) Hw any illieters in a arathn (2.22 iles) 2.22 i = 4.2 i.28 ft.85 n 8) What is the vlue in n f 2. allns? 2. al = n al ) Given that = 0.8 (f ethanl), cnvert.x f ethanl t tns f ethanl k tn 0.58 = tn k c

4 Percents: Practice: Give it a try. I want yu t try t identify the part and the whle saple in each f the fllwin. a) Seleniu akes up 28.% f the cpund bariu selenate. Seleniu is PART f bariu selenate b) Water is.2% hydren. Hydren is PART f water c) A certain slutin is 5% isprpyl alchl. Isprpyl alchl is PART f a slutin d) The ther 5% f the abve slutin is water. Water is PART f a slutin e) Seawater is abut.5% sdiu chlide. Sdiu chlide is PART f seawater f) Silicn akes up abut 25.% f the Earth s ass. Silicn is PART f the Earth ) The averae huan bdy is 2.x -4 % ld. Gld is PART f the huan bdy Percents as cnversin facts: Practice: Write the 2 pssible cnversin facts f each f the fllwin. Be sure t include prper units. 28. seleniu 0 bariu selenate a) Seleniu akes up 28.% f the cpund bariu selenate. 0 bariu selenate 28. seleniu b) Water is.2% hydren c) A certain slutin is 5% isprpyl alchl d) The ther 5% f the abve slutin is water e) Seawater is abut.5% sdiu chlide f) Silicn akes up abut 25.% f the Earth s ass ) The averae huan bdy is 2.x -4 % ld.2 k hydren 0 k water 0 k water.2 k hydren 5 isprpyl alchl 0 slutin 0 slutin 5 isprpyl alchl 5 water 0 slutin 0 slutin 5 water.5 sdiu chlide 0 seawater 0 seawater. 5 sdiu chlide 25. k silicn 0 k Earth 0 k Earth 25. k silicn try-z ld 0 try-z huan bdy -4 0 try-z huan bdy 2. try-z ld Practice: Slve each f the fllwin: a) A saple f bariu selenate weihs 5. ras. If seleniu akes up 28.% f the cpund bariu selenate, hw 28. seleniu any ras f seleniu are in the saple? 5. bariu selenate = 5.8 seleniu 0 bariu selenate b) Water is.2% hydren. If a bwl f water cntains.44 k f hydren, hw any k f water are there? 0 k water.44 k hydren =. k water.2 k hydren c) 50 f a certain slutin is 5% isprpyl alchl. Hw any f isprpyl alchl des the slutin cntain? 5 isprpyl alchl 50 slutin = isprpyl alchl 0 slutin d) Seawater is abut.5% sdiu chlide. Hw any f seawater cntains f sdiu chlide? 0 seawater sdiu chlide =.4 seawater.5 sdiu chlide e) Silicn akes up abut 25.% f the Earth s ass. If the Earth weihs abut 5.52x 24 k, what is the ass f silicn k silicn 24 available f akin stuff? 5.52 k Ear th =.54 k silicn 0 k Earth f) The averae huan bdy is 2.x -4 % ld. If the averae huan weihs 2250 try-unces, hw any try-unces f ld are in the huan bdy? If the price f ld is $5 per try-unce, hw uch is that ld wth? 4 2. try-z ld $ try-z huan bdy = $ try-z huan bdy try-z ld

5 Me Prbles! ) What is y ass in lbs. if this nin I weihed,8? ( k = 2.20 lb.) k lbs k = 22 lbs 2) Gld is aazin stuff!! A.50 c piece f pure ld can be ade int a sinle wire that stretches 82.2 k in lenth (ruhly the distance fr here t Stcktn). Hw ln wuld that wire be in naneters (n) 82.2 k k n = 8.22 n ) The speed f liht is 2.8x0 c per secnd. What is the speed f liht in iles per hur c in ft i 00 s. i = s 2.54 c in 5280 ft hr hr 4) If a snail ves at 0.24 c per secnd, hw fast is the snail in furlns per ftniht? ( furln = 0. feet and 0.24 c in ft ftniht = 4 days) furln 00 s 24 hr 4 day 4. furln = s 2.54 c in 0. ft hr day ftniht ftniht 5) ake Tahe is the 2 nd deepest lake in the United States and has a vlue f 5 k. The Aazn River is the larest river in the wld, with an averae flw rate f.5x ft per secnd. At that rate, hw any days wuld it take f the Aazn River t fill ake Tahe? 5 k k.28 ft s.5 ft hr 00 s day 24 hr = 8.24day ) Other than ur wn sun, the clsest star t the Earth, Prxia Centauri, is abut 4.22 liht years away. The fastest anade spacecraft, the Helis II deep space prbe, travels at a speed f 0.2 k/s. If yu were n the Helis II, hw any years wuld it take yu t et Prxia Centauri? 5.88 ile k s hr day yr 4.22 l.y. l.y ile 0.2 k 00 s 24 hr 5 day 4 =.80 yr ) The standard ndn Gld Delivery Bar is 200. ln, 80.0 wide and 45.0 tall. As f June 2, 20, ld was sellin f $5 per try-unce. If ld weihs. ras per c, hw uch is ne ndn Gld Delivery Bar wth? ( 200. )( 80.0 )( 45.0 ) c. tr. z. 5 $ 2 c.4 tr. z. = $ 52, 000