QUIZ 1

Department of Civil Engineering CE 47400 - Environmental Engineering I The Grove School of Engineering Instructor: Vasil Diyamandoglu — Civil Engrg City College of New York Semester: Fall 2023 stupentiams: SOLUTION @ Quiz No.1 ‘Wednesday, September 13, 2023 A student transfers 0.025 moles of sodium nitrate powder (NaNOs) in a small volume of water, has the solution mixed so that the powder dissolve completely and then fills more water in the volumetric flask until it reads 1.00 liter. Calculate the concentration of sodium nitrate in the solution and express it in (a) mg/L; (b) meq/L; (c) Molarity of solution; (d) Normality of solution; and (e) “mg/L as CaCO3“. (Na=23; N=14; C=12; O=16; Ca = 40). MW (Wattby) = R+ 144 3%/6 = B854 fmde 0,025 mles /i x EZ 5/7& 2125 /1= /258 : w t= MW __ = &}mm/e t%ugé /m/e”&/ v//,/—é: &85 5/3? R12 B _ ppaseq - 2574 C C "R gl 25 meq , S0 mga0CalOs _ | 350 mg as (alls & ¢ Z- ) 2125 my /L L) R5 2 0, ogz%/@ 0,025 @7/[_ = @/0.25/\/ @ 1,250 "4 a5 (al0% L