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A set of data gave an average unpopped corn kernel mass of 0.12 grams. How many kernels are in a pound (454 g) of unpopped corn?
An organic compound was prepared and purified by chromatography. A conductivity measurement showed the compound to be a nonelectrolyte. Elemental analysis gave an empirical formula of CH3O.
many household cleaning products contain oxalic acid h2c2o4 a diprotic acid with the following dissociation constants
The volume of HI(aq) required to reach the equivalence point : (1c) The pH at the half-neutralization point. (1d)The pH at the equivalence point.
from the plots of the boiling point versus the volume of distillate in either of the fractional distillations of the ethanol-water mixture,what conclusion can you draw about the homogeneity of the distillate?
considering the given equation as. cac2s2h2ol c2h2gcaoh2aq nbspin which acetylene gas c2h2 is produced a. determine
The molar solubility of manganese(II) carbonate is 4.2 ? 10-6 M. What is Ksp for this compound
If the density of water is 1.00g/mL, what is the weight in pounds of gallon of water? you may assume that mass and weight are equivalent at the earth's surface.
The vapor pressure of pure water at 25C is 23.8 torr. A solution is made by mixing 18.52g of an unknown non-ionic substance into 200.00g of water and the vapor pressure of the solution is found to be 23.3 torr. What is the molecular weight of the ..
A piston has an external pressure of 8.00 \rm atm. How much work has been done if the cylinder goes from a volume of 0.170 liters to 0.530 liters.
A gas expands and does pv work on its surroundings equal to 347 J. At the same time, it absorbs 127J of heat from the surroundings, what is the change in energy of the gas.
The decomposition of HI(g) is represented by the equation 2HI(g) H2(g) + I2(g) Kc= 64 at 25°C. If the equilibrium concentrations of H2 and I2 at 400°C are found to be [H2] = 5.0x10-4 M and [I2] = 1.4x10-3 M, what is the equilibrium concentration o..
A 3.77g sample of oxalic acid (H2C2O4x2H2O) was dissolved in enough water to make 1000 mL of solution. Then 17.15mL of this oxalic acid solution was titrated to the end point with 22.05mL of an unknown sodium hydroxide soloution.
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