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The flask was then shaken until the solution was uniform. A 35.0-mL sample of this glucose solution was diluted to 0.500 . How many grams of glucose are in 100L. of the final solution?
The entropy of sublimation of a certain compound is 7.2 J / K mol at its normal sublimation point of 76 C. Calculate the vapour pressure in torr of the compound at 28 C. Assume that the enthalpy of
A 100.0 ml aliquot of .2oo M aqueous potassium hydroxide is mixed with 100.0 ml of .200 M aqueous magnesium nitrate. what mass of precipitate is formed?
Calculate the molecular mass of the nonionic solutes. 64.3 grams of solute in 3.90 X 10Ë grams of water raises the boiling point to 100.680 C.
A compound of a transition metal and iodine is 65.1% metal by mass. How many grams of iodine is present in 859 g of this compound?
20cm3 of a saturated hydrocarbon required 160cm3 of oxygen for complete combustion 100cm3 of carbon dioxide and 120cm3 of water vapour were produced all measurements being made at the same temperatu
80 g of potassium nitrate are dissolved inn 100 ml of water at 60 degrees celsius. at what temperature will potassium nitrate begin to crystallize as the solution cools?
How many seconds are required to produce 4.94 mg of chromium metal from an acidic solution of potassium dichromate, using a current of 0.234 A?
3 solutions are mixed together to form a single solution. One contains 0.2 moles of Pb(C2H3O2)2, the second one contains 0.1 moles of Na2S, and the third contains 0.1 moles of CaCl2.
Consider the titration of 50.0 mL of 0.217 M HN3 (Ka = 2.6 x 10-5) with 0.183 M NaOH. Calculate the pH of the solution after the addition of 29.6 mL of NaOH solution.
A total of 2.00 mole of a compound is allowed to react in a foam coffee cup that contains 162g of water. The reaction caused the temperature of the water to rise from 21.0 C to 24.7 C. What is the e
First determine which is the limiting reagent, then calculate the heat produced by the reaction (q), and molar heat of the reaction (H) using the above equations.
If 25.0 mL of 0.200 M NaF solution are mixed with 10.0 mL of 0.150 M Pb(NO3)2 solution, how many grams of the precipitate would be formed?
A 1.00 L balloon filled with nitrogen at 25 ° C and 765.3 torr is moved to a closed vessel with the pressure now at 659.3 torr and temperature 25 ° C. Calculate the balloon's volume
If a bottle of nail polish remover contains 171 of acetone, how much heat would be released by its complete combustion? The density of acetone is 0.788 .
Which form would give faster relief for your heartburn, considering that each contained the same ingredients and were taken in equal amounts? Why?
Outline of the mechanism of the dehydration of 4-methylcyclohexanol catalyzed by phosphoric acid please.
A solution is prepared by dissolving 55.1 g of KCl in approximately 75 mL of water and then adding water to a final volume of 125 mL. What is the molarity of KCl(aq) in this solution?
In the reaction Fe (CO) ^5 + 2PF^3 + H^2 > Fe (CO) ^2(PF^3) ^2(H) ^2 + 3CO, how many moles of CO are produced from a mixture of 5.0 mol Fe (CO) ^5, 8.0 mol PF^3, and 6.0 mol H^2?
consider the reaction in which 410g of Ca(NO3)2 react with just the right amount of magnesium metal in a single replacement reaction. how many grams of lithium are required?
Assume that a particular reaction evolves 243 kJ of heat and that 28 kJ of PV work is gained by the system? What are the values of delta E and delta H for the system?
What is the boiing point for each compound? The IMF is London Dispersion.
A certain reaction has ?H equal to 11.57 kJ/mol. This reaction is normally run at room temperature (25?C). At what new temperature should the reaction be run so that K is twice its value at 25?C?
If the flask has a volume of 0.400 L, what is the minimum mass of PH3BCl3(s) that must be added to the flask in order to achieve equilibrium?