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An 80.0 gram sample of a gas was heated from 25 C to 225 C. During this process, 346 J of work was done by the system and its internal energy 9185 J. What is the specific heat of the gas?
How can diacetylmorphine be ionised in the blood and what will the effects of this be on the molecule in circulation? (I assume that it will be more soluble?)
An aqueous solution is 48.3% by mass hydroiodic acid, HI. The density of this solution is 1.6 g/ml at 20 C. How many grams of pure HI are there in 190.0 ml of this solution at 20.0 C?
An endothermic chemical reaction with ?E = +41 kJ/mol has an activation energy of +95 kJ/mol. What is the activation energy for the reverse reaction?
The elements X and Y form a compound that is 33.33% X and 66.67% Y by mass. The atomic mass of X is twice that of Y.What is the empirical formula of the compound?
a 436 mL volume of hydrogen gas is collected at 25 kelvin and 725 torr. what volume will gas occupy at STP
Explain PH and Biochemistry, Determine the weight in grams of sodium dihydrogen phosphate (M.W.138.01) and disodium hydrogen phosphate (M.W 141.98) needed to prepare 1L of a standard buffer at pH 7.00, with a total phosphate concentration of 0.100..
Determine the mass of the liquids in grams if this liquid is added to the beaker the combined mass becomes 238.254 grams? Given that the mass of beaker=225.08 g?
Calculate the final temperature of 37 mL of ethanol initially at 11 degrees C upon absorption of 624 J of heat. (density of ethanol =0.789 g/mL).
Compute the activation energy for the flashing process. When At 29 o C the average rate is 3.3 flashes every 10 seconds; at 23 degree Celsius the average rate
How many grams of CaCl2 would be required to produce a 3.5 M (molar) solution with a volume of 2.0 L.
how many liters of fluoridated drinking water would a 70 kg person have to consume in one day to reach this toxic level? How many kg of sodium floride would be needed to treat a 7.49x10^6 -gal reservior?
If the surface area of a human body is 16,100 square centimeters, what is the total weight of the atmosphere on a human body
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