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50.0 mL of rhubarb juice are titrated with 0.1000 M NaOH and 23.5mL of this NaOH solution are necessary for neutralization. Assuming the acidity of the juice is due to oxalic acid (a di-protic acid), H2C2O4 (90.04g/mol), find out the weight of oxalic acid in grams per liter of juice.
Arrange the four compounds below in order of increasing volatility.
caffeine is about 10 times as soluble in hot water as in cold water a chemist puts hot water extract of caffeine in to
The vapor pressure of benzene (C6H6) is 120 torr at 27.0C, and its normal boiling point is 80.1C. What is the molar heat of vaporization of benzene.
A compound was analyzed and found to contain 40.00% carbon, 6.72% hydrogren, and 53.25% oxygen with a molar mass of 180.0 grams.
Consider the titration of a 26.0 mL sample of 0.175 M Ch3NH2 with 0.150M HBr . Determine each of the following. 1) the initial pH? 2) the volume of added acid required to reach the equivalence point
Presume that the anoxic fermentation of organic matter {CH2O} in water yields 15.0 L of CH4 at standard temperature and pressure. Explain how many grams of oxygen would be consumed by the toxic respiration of the same quantity of {CH2O}
The resulting standard solution was used to titrate 25.0 mL of an unknown diprotic acid. If 18.50 mL of the standard NaOH solution was needed to reach the end point, What is the concentration of the unknown diprotic acid solution
Give a detailed description of the mechanism by the lagging strand of the double strand DNA duplex is synthesised and point out the role of all the enzymes that are involved
the diameter of a helium atom is about 1102pm.supposethat we could line up helium atoms side by side in contact with
A 20.5 g sample of protein dissolved in water to prepare 500ml solution shows an osmatic pressure of 3.72 torr at 27 degrees C. Estimate the molar mass of the protein
A +2.5 uC charge is located at point A at the origin and a-6.0 uC charge is located at point B at +25 cm on the x axis. Point C is located at +10 cm on the x-axis.
nickel ion forms the complex ion hexaamminenickel (II) with a formation constant of(Kf) of 5.6 x 10 ^8. initially the complex is formed when .002 M nickel sulfate is added to .10 M ammonia.
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