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determine the ph of the following solutions, showing calculations:
1) a mixture of 0.040 M CH3COOH and 0.060 M CH3COO-
2) 10.00 ml of solution, 0.040 M CH3COOH, Ka= 1.8 * 10-5, titrated to the endpoint with 0.060 M NaOH
3) solution 2) after 5.00ml more of the 0.060 M NaOH has been added
A piece of lithium metal was added to a flask of water on a day when the atmospheric pressure was 757.5 Torr. The lithium reacted completely with the water to produce 250.0 mL of hydrogen gas, collected over the water at 23°C, at which temperature..
When 7.00 moles of gas A and 3.00 moles of gas B are combined, the total pressure exerted by the gas mixture is 1.0 atm. What is the partial pressure exerted by gas A in this mixture?
The original conditions on a container filled with gas at a constant temperature are 180 cc and 300 mm Hg. The desired new volume is 90 cc.
A 25-g sample of an alloy at 92 degrees celsius is placed in 50 grams of water at 20 degrees celsius. If the final temperature reached by the alloy sample and water is 27 degrees celsius.
A sample of .755g of NaHCO3 was dissolved in 25mL of .960 M HCl. After heating, 6.7 mL of .601 M NaOH was needed to neutralize the excess acid that was not neautralized
How many grams of NaNO2 form when 429 g NaNO3 react? The yield is 90.%.
Consider a solution of a weak acid at a pH equal to its pKa. By how much would the pH change, and in which direction, if we added to this solution enough base to neutralize 10% of the total acid?
When 56.0 g calcium and 34.7 g nitrogen gas undergo a reaction that has a 88.0% yield, what mass of calcium nitride forms?
which of the following is a neutralization reaction? 2no2 --> 2no-> + 02, h2o+so3-->h2so4, hno3 +koh-->h2o+kno3, 4na+o2 --> 2na2o, kcl+nano3--> kno3 + nacl
Liquid NCl3 in a 2.5 L closed container is heated until it decomposes completely to gaseous products. The resulting mixture exerts a pressure
How does the answer for part (a) change if the gas of interest is He? c) What is the largest molecular mass that is capable of escaping Earth's surface at 298 K?
A solution of household bleach contains 5.25% sodium hypochlorite, NaOCl, by mass. Assuming that the density of bleach is the same as water,
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