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A solution is prepared by dissolving 15.0 g of NH3 in 250 g of water. the density of the resulting solution is 0.974 g/mL. The molarity of NH3 in the solution is
Oxalate ion, C2O4 2-, and permanganate ion,MnO4 -1,react in aqueous basic solution to give carbonate ion, CO3 2-, AND solid manganese dioxide,MnO2. What is the complete and balanced equation
175g of water was heated from 15 degrees to 88 degress celsuis. how many kilocalories were absorbed by the water?
What is the percent yield of a reaction in which 228. g phosphorus trichloride reacts with excess water to form 118 g HCl and aqueous phosphorus acid (H3PO3)?
a volume of 60.0 ml of aqueous potassium hydroxide koh was titrated against a standard solution of sulfuric acid
Calculate the vapor pressure of ethanol at 30C (in mm Hg). Bp of ethanol 76 C.
The hydrogen atom can absorb light of wavelength 2626 nm. (a) In what region of the electromagnetic spectrum is this absorption found? (b) Determine the initial and final values of n associated with this absorption. initial
Consider an electrochemical cell with a cobalt electrode immersed in 1.0 M Co2+ and a lead electrode immersed in 1.0 M Pb2+. Co2+ + 2e- --> Co E0 = -0.28 V Pb2+ + 2e- --> Pb
Calculate the solubility of copper (II) iodate in 0.56 M copper (II) nitrate. Ksp* is 7.4x10-8 M3.
The next 6 questions involve the calculation of concentrations of the molecular and ionic species in an aqueous solution that has an analytical composition of 0.060 M KH2PO4 + 0.460 M K2HPO4.
Use condensed formulas or line angle formulas to illustrate the saponification reaction of the fatty acid that is BOTH an OMEGA-6 AND AN 18:2 FATTY ACID
when carbon dioxide dissolves in water carbonic acid h2co3 is formed. when this enters limestone caco3 it dissolves the
30.0 mL of a 3.0 M KOH solution are diluted to 250.0 mL. What is the molarity of the diluted KOH solution? 3)what volume of 1.00 M NaOH is required to prepare 500.0 mL of 0.250 M NaOH? then explain how to prepare this solution.
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