Question

wa y LOUR at the petri dish at this station. Use the data in live answer questions 1 - 3. Assume same size (volume) Bean Picture Mass of 1 bean (g) white 0.14 Black 0.28 Green 0.14 yellow 0.22 Whicle bean as the highest mass density W elboan has the highest-numbur density 5 BeanCo 3. Imagine the beans are really molecules in a mixture. What is the mole percent of Bean C? There are a total of 24 beans in the dish. Show your work for full credit on this question. In a solution, there is 130.0 mL (140.703 g) solvent and 6.24 mL (8.0609 g) solute present in a solution. Remember significant figures in your answers below. 4. Find the mass percent of the solute. 5. Find the volume percent of the solute. 6. This cube is pure Copper. It has a mass of 146.0g. The molar mass of Copper is 63.5460 g/mol. How many atoms of copper are in this block? The density of aluminum is 2.7 g/cm'.

Answer 1

Mole poramt mole of 'c' X 1o0 Tolal molus of A+B+ CtD mole of c wt of c' Mwt c givern beams au ually mobculs 23 M wt a C: 6023x1o Xo14 0xo 14 3 6023 X10 A 6 02 3 x 10 xo 289 xo 229 6023 x 1033 Since daha is Mot clean

So all aue equal mo of beans A- B=C=D-24 asum mol of c =A14xC 6.023x10Or mole of A xor 6 023 1023y mole ot B 6003x1033x02s 6023 XIo x-A-2 mole yof c 6.022X1023 molb of A B+C+D Sos2xio3 X 10 6.0221103 x10025

V 130 mi Soluend Soluti 6 24 me - Nolumw 9.o6019 mars percemt oSolute mas af solut To lal mars slut +Solwent 1 8-0609 80609 O.O54186 x 100 |48 . 163१ S.41867 mas y otsolute Nolume of salude No Cume penunt o1 Salule Total volume of solute +5olwent 6.2५ 0.04 6X10 6.24 + 130 0) volumy4.58

Cu 146-0 Hwi 63-5460 gmole atoms of coppe in block ? fmals of Ca in cube 146 mola 63 5460 2.29755 mols 1 mo d alom of Cu in block 2 of molecule in Imola Np = 6.022 X 1o23 mo me SinLe Cu is monoao mic moul haut latom 6.022X 1023o mo o ato m 297 55 x 6022X 103 mo o atoms of Cu in block in 2.29355 13.8 388 X103 atom