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Why is it more difficult to identify all of the components of a mixture than it is to identify the cation and anion that make up a simple salt?
a 0.331-g sample of aspirin prepared in the lab was dissolved in 95% ethanol and titrated to a phenophthalein endpoint with 16.7 ml of 0.107M NaOH Calculate moles of scetylsalicylic acid present in the aspirin sample ;What mass (g) of scetylsalicy..
calculate how many moles of the product form when 0.040mol of K completely reacts. Assume that there is more than enough of the other reactant. 4K(s)+O2(g)?2K2O(s)
considering the process rbl rarr rbg at 1 atm and 686degc in this process it is given that rubidium has a heat of
a solution of a and b with 30 mole percent of a is in equilibrium with its vapour which contains60 mole percent of a.
a student placed 17.5 g of glucose in a volumetric flask added enough water to dissolve the glucose by swirling then
Draw the structure of the bromohydrin formed when (E)-3-methyl-3-hexene reacts with Br2/H2O.
Calculate the activity for CS2 at mole fraction CS2=.722 for a Raoult's Law standard state using the following data: PCS2=446.9 Torr, and P*CS2=512.3 Torr
In the nitration of methyl benzoate, why do you wash the crystals with water followed by an ice-cold methanol washing? What is the purpose of pouring the reaction mixture over ice?
Consider the neutralization reaction that takes place when hydrochloric acid reacts with aqueous sodium hydroxide.
Compute the quantity of work(W) that is associated with a 9.5 Litre expansion of a gas against the given pressure of 755mm Hg
Upon resonding to a 2am domestic transportation mishap, your hazmat team determines that a liquefied compressed gas is leaking from a 5lb steel cylinder.
Acetic acid has a Ka of 1.8 times 10^{-5}. Three acetic acid/acetate buffer solutions, A, B, and C, were made using varying concentrations: 1. [acetic~acid] ten times greater than \rm [acetate]
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