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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.
each tire of an automobile is equipped with a relief valve such that the pressure inside the tire will not exceed 240
a. What is the equilibrium constant expression for the reaction if the equilibrium constant is 78? b. Does the equilibrium mixture contain more products or reactants?
a 16 ounce speciality coffee drink contains 254mg caffeine. if all the caffeine is extracted and dissolved in an equal
a student placed 13.5 g of glucose rm c6h12o6 in a volumetric flask added enough water to dissolve the glucose by
What volume of O2 (g) is consumed in the combustion of 75.6L C3H8 (g) if both gases are measured at STP?
A compound containing nitrogen and oxygen is decomposed in the laboratory and produces 1.78g of nitrogen and 4.05g oxygen. Calculate the empirical formula of the compound.
A flask contains 0.190 mol of liquid bromine, rm Br_2. Determine the number of bromine molecules present in the flask.
A gas sample is held at constant pressure. The gas occupies 3.26L of volume when the temperature is 51.6 F . Determine the temprature at which the voloume of the gas is 3.45 L.
If the temperature probe is accidentally calibrated incorrectly and at 0.0C it reads -500. C, what temperature in Celsius will the probe read at 52. F
The element gallium has two naturally occurring isotopes with masses of 68.9300 amu and 70.9200 amu. What would be the fractional abundance of the first isotope, if the atomic weight was 69.6518 amu
paradichlorobenzene c6h4cl2 is a component of mothballs. a solution of 2.00 g in 22.5 g of cyclohexane boils at 82.39
Explain how can you determine whether one of these two suspected compounds was identical to the unknown compound without using any for of spectroscopy.
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