1) The molarity of CS2 is 16.6 M. What is the density ofCS2? 2) If 20.0 mL of 0.
ID: 677297 • Letter: 1
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1) The molarity of CS2 is 16.6 M. What is the density ofCS2? 2) If 20.0 mL of 0.75 M HBr is diluted to a totalvolume of 90.0 mL, what is the molar concentration od the HBrin the resulting solution? 3) what is teh actual experimental procedure you would use toprepare the following solutions? a) 1.00 L of 3.00 M NH4Cl b) 50.0 mL of 0.225 M BaI2, starting withBaI2 x 2H2O 4) How would you prepare 250.0 mL of 0.350 M HCL, startingwith 6.00 M HCl? 1) The molarity of CS2 is 16.6 M. What is the density ofCS2? 2) If 20.0 mL of 0.75 M HBr is diluted to a totalvolume of 90.0 mL, what is the molar concentration od the HBrin the resulting solution? 3) what is teh actual experimental procedure you would use toprepare the following solutions? a) 1.00 L of 3.00 M NH4Cl b) 50.0 mL of 0.225 M BaI2, starting withBaI2 x 2H2O 4) How would you prepare 250.0 mL of 0.350 M HCL, startingwith 6.00 M HCl?Explanation / Answer
1) You know that density is grams per litre ofsolution: [16.6mol CS2] x [76.15g CS2] = 1264.09gCS2/ Lsol'n 1LSol'n 1molCS2 2) [0.02L HBr] x [0.75mol HBr] x [ 1 ] =0.167mol/L L 0.09L 3 a) [1.00L NH4Cl] x [3.0mol NH4Cl] x [53.5gNH4Cl] = 160.5g NH4Cl 1L 1molNH4Cl Obtain and weigh160.5g NH4Cl and dissolve it in enough water to make a 1.0Lsolution b) [0.05L BaI2] x [0.225molBaI2] x [427.21g BaI2 x 2H2O] = 4.51g BaI2x 2H2O 1L 1molBaI2 x 2H2O Obtain and weigh 4.81gBaI2 2H2O and dissolve it in enough watch to make a 50mlsolution. 4) 0.25L HCL x [0.25mol HCl] x[ 1L ] = 10.4mL HCl (6.0M) 1L 6molHCl 10.4mL of 6.0mol/L HClis added to enough wather to make 250mL of solution Hope this helps!!!-PilsnerPrincess Hope this helps!!!
-PilsnerPrincess
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