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Naproxen is a commercially significant anti-inflammatory agent that can be isolated from the thyroid gland. A solution of 1.138 g of naproxen in 25.00 g benzene has an osmotic pressure of 4.00atm at 20°C. The density of benzene is 0.8787 g/mL at this temperature. Compute the molar mass of naproxen presuming it is a nonelectrolyte as well as the density of the solution equals the density of pure benzene.
A) (25 pts) Consider a 1.00 mol sample of acetylene (C2H2) is allowed to undergo the following two step, reversible process: the gas is a) first heated at constant volume until its pressure increases from 2.5 atm to 3.2 atm
an ingot of aluminum metal with a mass of 87.50 g is to be hammered into a thin sheet to be used as aluminum foil. if
If a second-period diatomic molecule has 5 electrons in its valence shell (total of 2s and 2p electrons), what is the predicted bond order of the molecule
According to the general trend in electron affinities, which group (or family) of elements tend to form the most stable anions
The Ksp of barium carbonate (BaCO3) is 5.0*10^-9 at 25.0 C. If a 20.0 mL sample of 0.1 M Ba(NO3)2 is added to 50.0 mL of 0.1 M Na2CO3.
why is it important to standardize NaOH solution instead of taking an accurate and diluting it in a volumetric
what is the approximate concentration of the solutionapproximate concentration of the solution in rm molrm kg if 1 rm
Consider the following thermochemical equations : 8Mg(s) + Mg(NO3)2(s) ? Mg3N2(s) + 6MgO(s) ?H°rxn = -3884 kJ Mg3N2(s) ? 3Mg(s) + N2(g) ?H°rxn = +463 kJ 2MgO(s) ? 2Mg(s) + O2(g) ?H°rxn = +1203 kJ Use the above equations to calculate the ?H°f (in k..
if the solubility of agno3 at 40oc is 211 g per 100 g of water what mass of this solute can be dissolved in 350 g of
The pH of a 2.1 M solution of a weak acid, HA, at 298K is 1.85. What percent of the acid has dissociated
Find the volume of oxygen gas required to react completely with iron and Calculate the volume of oxygen gas at STP that is required to completely react with 61.0 g of iron.
1. it is observed that a solution b of 2.57 g with molar mass 132.6 gmol andnbsp 34.28 g of a froze at 53.1 degree
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