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A cylinder contains 250 g of Helium at 200 K. The external pressure is constant at 1 atm. The temperature of the surroundings is lowered by 100 K. Calculate the heat lost or gained by the system in response to this change in the external temperature.
Determine the molarity of acetic acid in a 15 ml sample of vinegar that requires 22.7 ml of a .550 M solution of NaOH
question photoionization of a diatomic molecule produces a singly charged cation. for the molecules no calculate the
A 1.00 g sample of a gaseous compound of boron and hydrogen occupies 0.820 L at 1.00 atm and 3 degrees C. What is the molecular formula for the compound
My goal is prepare a 100.00 mL of a buffer with a pH = 3.500 and a total common ion concentration of 0.100 M. I have available to me, bottle of 1.00 M of acetic acid, formic acid, ammonia, hydrochloric acid, sodium hydroxide, sodium formate, sodiu..
When 5.0 g of CaCl2 was dissolved in 50ml of water in a coffee cup calorimeter, the temperature of the solution rose from 22.3 C to 30.5 C. What is the q solution in Joules and what is the q rxn in Joules?
Changing the conditions of the reaction can alter the value of the change in free energy (?G). Sort the following conditions as to whether each would decrease the value of ?
a assessor is measuring the perimeter of a rectangular lot. he measures two adjacent sides to be 50.11 plusmn 0.05 m
Calculate the cell emf for the following reaction: 2Ag+(0.30 M) + H2(1 atm) 2Ag(s) + 2H+(pH = 7.0) Need step by step instructions
if 3.35 ml of vinegar needs 44.0 ml of 0.135 m naoh to reach the equivalence point in a titration how many grams of
Given Ka values of 1.0 x 10-10 and 6.8 x 10-8 for C6H5OH and C5H5NH+ respectively, calculate the equilibrium constant for the following reaction.
Substance A is a gray solid that consists of an alkaline earth element and carbon; the m% C in substance A is 37.5%. It reacts with substance B to form substances C and D. 4.0 x 10^16 (16th power) formula units of substance A weighs 4.26 microgram..
In class we preformed an equilibrium constant lab measuring an equilibrium constant for an esterification reaction between carboxylic acid and an alcohol to form an ester and water. The reaction was between acetic acid and n-propyl alcohol to form..
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