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Hydrogen gas at a pressure of 1.25 bar is contained in a thick-walled neoprene rubber sphere which has inner and outer radii of 70mm and 80mm, respectively. The concentration of hydrogen at the outer surface of the sphere is negligible and leakage is so small that steady-state conditions can be assumed to occur for a long time. The solubility of hydrogen in rubber is 2.37 x 10-3 kmolm -3 (bar)-1 and the diffusivity is 1.8 x 10 -10 m2 s-1. Calculate the rate at which hydrogen escapes fromthe sphere. (Assume the inner surface of rubber is saturated with hydrogen).
Write a line angle formula of each constitutional isomer of dimethylcyclohexane. Write the IUPAC name of each isomer.
q.1 does refiningisolation of nitrogen from liquid air usingfractional distillation cause any pollution or any
explain the following given for each statement in determining the sequence of peptide with concise (short) but complete response. you must state the specificity of each statement implication in determining the sequence of octapeptide.
A student mixes 50 ml of 1.00M H2SO4 react with 100. ml (1 x 10^2 ml) of 1.00M NaOH in a calorimeter. The temperature of both solutions initially at 22.85 deg Celsius changes to 28.86 deg Celsius.
Solid white phosphorous melts then vaporizes at high temperatures. gaseous white phosphorus effuses at a rate that is .404 times that of neon in the same apparatus under the same conditions. how many atoms are in a molecule of gaseous white phosph..
What type of radioactive decay would be expected for the unstable nuclide
A 1.95 gram sample of sodium sulfate hydrate lost 0.756 gram of water when heated to constant mass. What is the formula of the hydrate?
A solution contains a mixture of sugars .59 mole fructose .50 mole glucose, .50 mole maltose, .50 mole sucrose dissolved in 1.00 kg of water. What are the freezing point and boiling points of the solution?
write the corresponding ionic and net ionic equations after balancingnbsp these given equations a. hclo4 mgoh2 rarr
calculate how many grams of ammonia could be formed from 2.32mol of nitrogen and h2h2?determine how many grams of
24.3 g of magnesium yield 40.3 g MgO upon combustion with oxygen. How much magnesium needs to be burned to yield 12.1 g Mgo
According to the following reaction, how many moles of zinc hydroxide will be formed upon the complete reaction of 0.292 moles zinc oxide with excess water
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