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You have just returned from a twenty five mile jog around the track at the Student Recreational center. As sweat drips from your chin, you contemplate the concept of fluid replacement, but can't find a bottle of Gatorade in your frig. Instead, you find a carton of your favorite orange juice and pour yourself a large glass (360 mL) of this beverage. An 8 oz (1 fluid oz=29.57 mL) serving of orange juice contains 16 g of sugar, 468 mg of potassium, 426 mg of chloride and 0mg of sodium. What is the osmolarity of this orange juice?
A solution of potassium permaganate is standardized with iron metal, a primary standard. The iron is dissolved in acid, reduced to Fe(II), and titrated with permanganate.
Calculate the temperature of the system once equilibrium has been reached. Assume that Cp,m for Au and H2O is constant at its value for 298K throughout the temperature range of interest.
Calculate the concentrations of H2SO3, HSO3-, SO32-, H3O+ and OH- in a 0.025M H2SO3. The pH is 1.88 and the Ka1= 1.5 x 10-2 and Ka2 = 6.3 x 10-8.
A 1.20 gram sample of dry ice is added to a 755mL flask containing nitrogen gas at a temperature of 25.0 degrees Celsius and a pressure of 725 mmHg. The dry ice is allowed to sublime and the mixture is allowed to return to 25.0 degrees Celsius. wh..
Briefly explain why hydrogen atoms in methane are all in equivalent positions? B. Briefly explain why there are no structural isomers of propane (c3h8)
A buffer solution is made by adding 5.05 g of KOH (56.1 g/mol) to 500.0 mL of 0.400 M benzoic acid, HC7H5O2 (Ka = 6.6×10^-5). Calculate the pH of the solution that results when 100.0 mL of 0.150 M HCl is added to the above buffer (total volume is 6..
How many liters of hydrogen gas are collected over water at 20°C and 725 mmHg when 0.75 g lithium reacts with water? Aqueous lithium hydroxide also forms.
Sodium metal reacts with water to produce hydrogen gas and sodium hydroxide according to the chemical equation shown below. When 0.030 mol of Na is added to 100.00 g of water, the temperature of the resulting solution rises from 25.00°C to 37.90°C
the reaction of potassium in water is extremely exothermic, what would be the problem with adding a large piece of potassium to a small amount of water?
The equilibrium will shift towards product and Keq will increase. B)The equilibrium will shift towards reactant and Keq will decrease.
It is quickly degraded in the atmosphere though reaction with OH• and O3 to form non volatile species which then form particles. These latter ones are responsible for the haze.
Claisen reactions use a stoichiometric amount of base and do not polymerize, unlike aldol reactions that use a catalytic amount of base and can polymerize.
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