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The water sample has a phenolphthalein alkalinity of 3.0 e -5, a pH of 10 also a bicarbonate ion concentration of 1.0 e -4 M. Define what is the total alkalinity in moms/L?
The first steps in the radioactive decay of 257Uuh involves the rapid and successive emission of 4 alpha particles
To this vessel 8.6787g of Ne are added in such a way that no butane escapes. The total pressure of the vessel (at the same temperature) is 1420 torr. Calculate the volume of the vessel and the mass of the butane.
All living things contain carbon. Most of this carbon is stable carbon-12. However, a small percentage will be carbon-14, a radioactive isotope of carbon that decays with time
If the pressure increases to 800. torr, how many moles of gas were added to the container? Assume a constant-volume container.
Calculate the equilibrium concentration of Ag+ under these conditions.Ksp for Ag2CO3 is 8.1 x 10-12. Ag2CO3(s, excess)2Ag+(aq) + CO3-2(aq)
calculate the Henry's law constant for oxgen solubility in freshwater undr these conditions
suppose you have a 40.3 ml sample of a solution containing a mixture of nitric acid hno3? and hydrochloric acid hcl.
Which of the following is always true for a spontaneous process at constant temperature. A) Delta S system + Delta S surroundings = q/T B) Delta S > 0 C) Delta S = q/T D) Delta system + Delta S surroundings > 0 E) Delta S
Calculate the pH of a solution that is prepared mixing 2.16 grams of propanoic acid (74.08 g/mol) and 0.56 grams of NaOH (40.00 g/mol) in enough water to make 100.0 mL
In the purification process, the organic layer is washed sequentially with 2 M NaOH, water, and saturated aqueous sodium chloride. What is the purpose of each of these washes and why is cold 2 M NaOH recommended
Automobile air bags inflate during a crash or a sudden stop by the rapid generation of nitrogen gas from sodium azide, according to the reaction
when 2.55 g of an unknown weak monoprotic acid ha molar mass 85.0 gmol is dissolved in 250.0 g of water the freezing
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