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How many L of solvent should be added to 0.46 L of a 0.28 M solution if you want a final concentration of 0.13 M.
Z- is a weak base. An aqueous solution of NaZ is prepared by dissolving .350 mol of NaZ in sufficient water to yield 1.0 L of solution. The pH of the solution was 8.93 at 25.0 C. The Kb of Z- is
Suppose that 35.47 g of ice at -13.7°C is placed in 46.51 g of water at 96.7°C in a perfectly insulated vessel. Calculate the final temperature.
What is the pH of a solution made by mixing 100.00 mL of .20 M HCl with 50.0 mL of .10 M HCl. Assume that the volumes are additive
A) Amonium phospahte (NH4)3PO4 is water insoluble b) A precipitation reaction will occur in the following reaction AgCLO4 (aq) + CaBr2(aq) c) Ba(OH)2 is a strong acid d) Ba(OH)2 is a strong electrol
A sample of c3h8 has 6.56 x 10^24 H atoms. How many carbon atoms does the sample contain. what is the total mass of the sample
The haloform reaction is executed in this experiment to synthesize benzoic acid from a methyl ketone, acetophenone. Provide an explanation for the following steps in the procedure. a) Why is acetone
Briefly explain the circumstances under which a mixed solvent recrystallization method would be used to recrystallize a given compound.
The temperature of a 12.58 g sample of calcium carbonate increases from 23.6 c to 38.2 C. if the specific heat of calcuim carbonate is 0.82 J/g-K, how many joules of heat are absorb
Balance the following equations and write balanced net ion for each reaction. a) HBR(aq) + Ca(OH)2 (aq) b) net ionic equation C) Fe(OH)3 (aq) + H2SO4 (aq) d) net ionic quation
It is the universal solvent d. it does not participate in the reaction e. it is necessary for the formation of the bromonium ion
what are the concentrations of [NAD+] and [NADH] in the cells? Under oxidative stress condition, the cellular redox potential is shifted to -290 mV. What will be the concentrations of [NAD+] and [NA
What are the empirical formula and the molecular formula of the compound.
Aluminum reacts with oxygen to yield aluminum oxide. If 5.0g of AL reacts with 4.45g of oxygen what is the empirical formula of aluminum oxide
Fatty acid breakdown generates a large amount of acetyl CoA. What wil be the effect of fatty acid breakdown on pyruvate dehydrogenase complex
Following the instruction for the standardization of sodium hydroxide a student took 3.5 gms of KHP (MWt 204.2g/mol) and titrated the solution formed with the given sodium hydroxide solution.
What is Le Chatelier's principle and explain what happens to the dynamic equilibrium of the system as the cyclohexene is distilled to the receiver flask
From a consideration of the Lewis structure of the thiocyanate ion, SCN-, in which carbon has a double bond with both the sulfur and nitrogen atoms, the formal charges on the sulfur, carbon, and nit
When waves of equal amplitude from two sources are out of phase when they interact, it is called __________. a) destructive interference b) diffraction c) constructive interference d) effusion e) am
Determined an aliquot of 0.03526M potassium permanganate solution required to make 100 mL of a 10-3 mol/L solution.
What is the concentration of N2 gas at equilibrium when the concentration of NO2 is twice the concentration of O2 gas
Calculate the molarity of Pb2+ when 20.00 mL of 0.400 M Pb(NO3)2 is diluted with water to a volume of 200.00 mL.
What are the H3 O^+ and OH^- concentrations of solutions that have the following pH values? A. pH1 B. pH 13 C. pH 0 D. pH 1.24 E. pH 7.96
Trans-bis(ethylene) dithiocyanato copper (II) cobalt forms three linkage isomers. write each structural formulas and name each isomer
A student was asked to determine the strength of the acetic acid in a vinegar solution. For 25.00 mL of vinegar he used 32.05 mL of a 0.4235M solution of sodium hydroxide to neutralize using phenolp