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A 0.233 g sample of an unknown monoprotic acid was titrated with 0.105 M KOH and the resulting titration curve is shown below. It took 35 mL to reach the equivalence point. What is the molar mass of the acid?
Determine Qc if the following amounts (in moles) of each component is placed in a 10.00 L container.
What is the mass of sulfur dioxide gas (SO2) at STP in 164 L of the sample?
A 2.60-L vessel contained 0.0160 mol of phosphorus trichloride, 0.0115 mol of phosphorus pentachloride, and 0.0903 mol of chlorine at 180°C in an equilibrium mixture. Calculate the value of Kc for the following reaction. PCl3(g) + Cl2(g) PCl5(g)
The problem: CaCO3 can be roasted to produce CaO and CO2. This reaction is carried out in a flash connected to an open-end mercury manometer when the atmospheric pressure is 754 torr.
Balance the following full redox reactions using the lowest integer coefficients, in basic conditions. NiO2(s) + Zn(s) ? Ni(OH)2(s) + ZnO22?(aq)
Which of the following elements would you predict to have an anomalous electron configuration? A) Se B) Ce C) Ag D) Sr
Chemicals available for extractions: CH2CL2, 1M NaOH, 1M HCL and sodium sulfate for drying, Chemicals available for crystallization: ethyl ether, 95% ethanol, methanol, isopropyl alcohol, acetone, hexane, toluene and methylene chloride.
Write the reaction for the production of pure Calcium from Calcium Oxide using Aluminum as a reducing agent. Include whole number balancing coefficients
in an extraction of benzoic acid from a three part mixture containing benzoic acid methyl orange and previously
A buffer solution contains 0.71 mol of boric acid (H3BO3) and 0.53 mol of sodium dihydrogen borate (NaH2BO3) in 4.00 L. The Ka of boric acid (H3BO3) is Ka = 5.8e-10. pH of buffer solution
A solution of ethanol (C2H5OH) in water is prepared by dissolving 63.5 mL of ethanol (density = 0.79 g/cm3) in enough water to make 250.0 mL of solution.
an ice cube of mass 9.0g is added to a cup of coffee whose temperature is 85c and which contains 110g of liquid. assume
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