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Problem- The diffusion rate of H2 in a lecture hall was found to be 25.0 m/sec at 25C. How long will it take poisonous HCN gas to diffuse 20 m in the room?
I need help for above question. Show each steps for the above problem.
Which of the following reaction sequences can be used to prepare m-chloroaniline starting from benzene
A solution of iodine was standardized with ascorbic acid. A 0.1150 g sample of ascorbic acid required 28.37 mL of I2 to reach a starch end point. Calculate the molarity of the iodine solution.
If you compare the melting point of a slightly impure mixture with the melting point of a pure compound, the melting point of the slightly impure mixture will be: a) broader and lower than the eutectic mixture
How much energy is released per Kg of Dilithium formed? Mass of one atom of 6 Li is 6.015121 amu. Do not know where to start.
If ammonia was added to a saturated solution of copper(II) iodate in a equilibrium with its precipitate, would the copper ion concentration increase, decrease, or stay the same
Problem- Hydrochloric acid is about as strong a mineral acid as sulfuric acid. Why would HCl not be satisfactory catalysts in this reaction
The restriction enzyme, SstI, cuts phage DNA at positions 24,472 and 25,877. Draw a picture of the gel you will see if it is used as the mystery enzyme.
A solid substance X has a vapor pressure of 300mm Hg at 25oC and does not conduct electricity. Solid substance Y has an undetectably small vapor pressure at 25oC and is a good electrical conductor.
Determine the molarity of the solution that is prepared as follows: 73.0 g of magnesium of nitrate is dissolved in enough water to make 550.0mL of solution. molarity
If 1L of .100M acetic acid is at equilibrium, how will the following change affect the equilibrium concentration of H+. The solution is diluted by a factor of 3.
Calculate the mass defect in Fe-56 if the mass of an Fe-56 nucleus is 55.921 amu. The mass of a proton is 1.00728 amu and the mass of a neutron is 1.008665 amu.
Calculate the value of Keq for the following equilibrium when [H2]=0.228M, [I2]=0.228M and [HI]=1.544 H2 + I2 -> 2HI
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