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What is the pH after 0.150mol of HCl is added to the buffer from Part A? Assume no volume change on the addition of the acid. Express the pH numerically to two decimal places.
What are the concentrations of OH- and H in a 0.00075 M solution of Ba(OH)2 at 25 °C? Assume complete dissociation.
What would you expect to observe when adding one drop of iodine-potassium iodine reagent to each of the four carbohydrates?
125 mole of oxygen gas is added to carbon in a .25L container. The mixture equilibriates at 500K. Calculate the equilibrium concentration of carbon monoxide, knowing that K=.086 at 500K.
A 275-g sample of nickel at 100.0C is placed in 100.0 mL of water at 22.0C. What is the final temperature of the water.
If 45.4g of H2O are produced in the reaction given below, the number of grams of magnesium carbonate used is.?
Write a balanced equation for the decomposition reaction described, using the smallest possible integer coefficients.
Electrode composed of chromium in a 1.0 M chromium(III) ion solution and another electrode composed of silver in a 1.0 M silver ion solution, connected by a salt bridge. Calculate the standard potential for this cell at 25 °C
An ideal gas is in a cylinder with a volume of 250.0 mL at a temperature of 25 ºC and a pressure of 700 torr. The gas is expanded to a volume of 1.0 L and the temperature increased to 500 ºC.
A chemist performed a titration experiment in order to determine the concentration of a given aqueous solution of HCl (an acid). She pipeted 25.00 mL of the HCl solution into an Erlenmeyer flask.
What is the minimum amount of hydrogen gas in grams required to completely hydrogenate 12.5 Kg of 2-butene?
Carbon-14 is a radioactive isotope which decays with a half-life of 5730 years. What is the first-order rate constant for its decay, in units of years^-1
What is the molecular formula of the compound? , draw Structures for the molecule (1 bonus mark for every acceptable structure, up to a maximum of 5 bonus marks).
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