Explain why ph is neutral at given temperature
The Kw for the dissociation of H2O varies with temperature. At 90°C, Kw = 1.0 x 10-13. explain why pH = 6.5 is neutral at this temperature and why pH = 7 is basic.
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Is it possible to separate Ca2+ from Mg2+ by selective precipitation of Mg(OH)2? To be precise, is it possible to precipitate 99.99% of magnesium without precipitating any calcium as hydroxides?
Give examples of specific situations that would call for the following types of research, explaining why - a) Exploratory research b) Descriptive research c) Diagnostic research d) Evaluation research. In the context of hypothesis testing, brief
The National Restaurant Association holds an annual food service convention in Chicago every year. This is a coveted event for many vendors to restaurants and hotels
Calculate ΔH°rxn for this reaction. ΔH°f [NaNO3(s)] = -467.8 kJ/mol; ΔH°f [NaHSO4(s)] = -1125.5 kJ/mol; ΔH°f [H2SO4(l) = -814.0 kJ/mol; ΔH°f [HNO3(g)] = -135.1 kJ/mol.
Two nonconservative forces are present: friction does -2.00 104 J of work on the car, and a chain mechanism does +3.00 104 J of work to help the car up a long climb. What is the change in the car's kinetic energy, ΔKE = KEf - KE0, from A to
Suppose an application generates chunks 40 bytes of data every 20 msec, and each chunk gets encapsulated in a TCP segment and then an IP datagram. What percentage of each datagram will be overhead and what percentage will be application data?
What are five key principles of effective differentiation and which of the five will be the most difficult for you to embrace with a "fluid" or "growth mindset .
Assume that patient blood lead levels are 0.590. What minimum mass of succimer in milligrams is needed to bind all of the lead in a patient's bloodstream?
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