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a mixture of HCOOH and H2C2O4 is heated with conc. H2SO4 . The gas produced is collected and on treating with KOH solution the volume of the gas decreses by 1/6 th . calculate molar ratio of two acids in original mixture.
Calculate the concentration of Cu^2+ in a solution prepared by adding 4.5*10^-3 mol of CuSO4 to 0.490 L of 0.37 M NH3.
It is possible to draw a valid Lewis structure that follows the octet rule for all of the following except one. Which one cannot be drawn without violating the octet rule.
how many moles of hcl need to be added to 15.0 ml of 0.50 m naz to have a solution with a ph of 6.50? ka of hz is
Which of the following statements regarding the Bohr model of the hydrogen atom is incorrect. A. Bohr's model shows the electron circling the nucleus in fixed orbits. B. In Bohr's model, electrons could exist between orbits.
Enter the compound formula, including state, of the missing substance ( Y ) in the balanced equation below. Do not give the coefficient. Polyatomic ions only need parentheses when there is more than one of the given ion in the molecular formula.
acetone is one of the most important solvents in organicchemistry used to dissolve from fats and waxes to airplane
Question- When 0.354g of an unknown nonelectrolyte compound was dissolved in 12.5g of benzene a solution was formed that froze at 4.46C. Calculate the molar mass of the unknown compound.
Question- What might prevent a restriction enzyme from cutting the DNA of the organism from which they are derived
calculate the heat in joules released by the dissolving salt. Assume that the specific heat of the solution is the same as thar of pure water(4.184J/g- celcius) and that the calorimeter is perfect.
32 mg of a FAD containing enzyme was found to contain 800 micrograms of FAD. This enzyme has a native molecular weight of 64 kD as well as is encoded by an 872 bp ORF. Explain what can be said regarding the protein architecture as well as cofactor..
A solution is labeled "0.464 M NaClO." What are the following in the solution? Express your concentrations to three significant figures even when only two are valid. Express your pH to two places past the decimal point. Note that the value of Ka f..
as the wavelength of the light increases the frequency _____? as the wavelength of the light increases the photon energy ___?
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