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An aqueous solution of a compound with a very high molar mass was prepared in a concentration of 29.7 g·L-1 at 25 °C. Its osmotic pressure was 0.184 ·102 Pa. Calculate the molar mass of the compound
Assume that a particular reaction evolves 241 {rm kJ} of heat and that 33 {rm kJ} of PV work is gained by the system.
When runners or other athletes practice at high altitudes pressure is reduced. What then will be the effect on the [O2] in their blood? Why does this produce a lightheaded feeling?
1FeO3+2 Al= 1Al2O3+2Fe, Determine the percent yield of a reaction that produces 28.65g of Fe when 50.0g of Fe2O3 reacts with excess Al according to the following reaction. Be sure to balance the reaction.
The phase diagram of ammonia can be characterized by the following information. The normal melting and boiling temperatures are 195.2 and 239.82 K, respectively, the triple point pressure and temperature are 6077 Pa and 195.41 K,
What is the mole fraction of ethanol in a solution made by dissolving 14.6 g of ethanol in 53.6 g of water?
You will take 10.0 mL of a 0.0100 M KIO3 solution, dissolve excess amounts of KI in it, and using the Na2S2O3 solution, titrate to the disappearance of the starch I2 color. Using the approximate molarity of the Na2S2O3 solution, calculate the appr..
the heat of vaporization of isopropyl alcohol c3h7oh is 42.1 kjmol. how many grams of water at 0oc could be frozen to
Draw the molecule by placing atoms on the grid and connecting them with bonds. Include all lone pairs of electrons. Show the formal charges of all atoms in the correct structure.
Please explain which of the following aqueous solutions has the strongest ion-dipole attractions: 0.3 M Na3PO4 .1 M NiF2 .2 M Rb2CO3 0.01 M Sr(OH)2 and .03 M ScBr3.
When an ant bites you, the reason it stings is because of an injection of formic acid. What is the pH when 50.0 mL of 0.1480 M formic acid (HCOOH) is titrated with 40.2 mL of 0.1841 M NaOH? PKa formic acid = 3.745.
A mixture of a, b, and c gives three peaks in the GC with relative areas of 1:5.5:7.8, What is the percent composition of the mixture. (a walktrhough would be helpful)
If I initially have a gas at a pressure of 12 atm a volume of 23 liters, and a temerature of 200k, and then I raise the temperature to 14 atm and increase the temperature to 300k, what is the new volume of the gas ?
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