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If the ozone molecules in the upper atmosphere stratosphere absorb much of the UV radiation from the sun. The temperature of the stratosphere is -23.0 ºC, as well as the pressure due to the zone is 1.4 x10-7 atm. Compute the number of ozone molecules present in 1.00 m3 (1L = 10-3 m3) in the stratosphere.
What chemical tests might be used to distinguish between pentanal and 2- pentanone; between benzyl alcohol and diphenylmethanol?
In Hexaphenylbenzene synthesis, using tetraphenylcyclopentadiene and diphenylacetylene, what volume of carbon monoxide, measured at STP, is produced by the decomposition of 38 mg of tetraphenylcyclopentadienone
Acetylene, C2H2, can be converted to ethane, C2H6, by a processknown as hydrogenation. The reaction is
The reaction OH(aq) + HCN(aq) H2O(l) + CN(aq) is first-order in both the OH and HCN concentrations. The rate constant at 25oC is 3.7×10^9 mol^-1 L s^-1. In an experiment, 0.500 L of 0.020 mol L ^-1 NaOH(aq) is rapidly mixed with an equal volume of..
Prepare a model of 3-penten-2-one. Are stererisomers possible here. Explain. Are any of these chiral. This system is said to be conjugated. Why.
A solution is prepared by dissolving 12.4 g ammonium sulfate in enough water to make 100.0 mL of stock solution. A 12.50 mL sample of this stock solution is added to 55.00 mL of water. Calculate the concentration of ammonium ions and sulfate ions ..
In a second experiment, I(electric current) broke down a sample of H 2 O into 1.45 grams of hydrogen and 11.51 grams oxygen. Are these results reliable with the law of exact extent?
question 1 give the numbers of protons and electrons in each of the following a na b ca2 c al3 d i e o2 f n3 and g
Calculate the pH at each of the following points in the titration of 50.0 mL of a 0.65 M B(aq) with 0.65 M HCl(aq} (a) before addition of any HCl
An aqueous solution that contains 285ppm of potassium nitrate (KNO3) is being used to feed plants in a garden. What volume of this solution is needed to prepare 1.7 L of a solution that is 97 ppm in KNO3?
Explain the relative trends in acidities of the compounds of the formula HXOn for compounds with identical central atoms, X, but differing values of n
the following cations were extracted from 100 g soil with at cec of 20 meq100g.nbsp the soil contained180 mg
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