What percentage difference in the hydrogen ion concentration
The pH of ocean water is about 8.1. If it changes as expected over the next century it may drop by 0.3 to 0.5 pH units. What percentage difference in the hydrogen ion concentration will this make?
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Express the work of isothermal reversible expansion of a vanderwaals gas in reduced variables and find a definition of reduced work that makes the overall expression independent of the identity of the gas.
A sound source of 500 Hz with an acoustic power of 1/10 of a watt how do you find the intensity 1/2 a m from the source, the pressure amplitude, and the magnitude of the specific acoustic impedance assuming the amplitude of the particle velocity i
How does the mass density compare to the density of individual neutrons (take them to have a radius of 2.3 attometers.
A copper penny has a mass of 3.1 g. Being electrically neutral it contains equal amounts of positive and negative electricity.
a. What equal positive charges would have to be placed on the earth and on the moon to neutralize their gravitational attraction?
Calculate the change in molar Gibbs energy of carbon dioxide (treated as a perfect gas) at 200 C when its pressure is changed isothermally from 1.0 bar to (a) 3.0 bar (b) 2.7 x 10-4 atm, its partial pressure in dry air at sea level.
A mixture of the compounds aluminum chloride and magnesium sulfide contains 48.2 g of aluminum chloride and is 68.3 % by mass aluminum chloride. Calculate the mass (g) magnesium sulfide in the mixture.
Calculate the molar composition of the product gas for each of the following three cases: (i) theoretical air supplied, 100% conversion of butane; (ii) 20% excess air, 100% conversion of butane; and (iii) 20% excess air, 90% conversion of butane.
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A 2016 survey of undergraduate students considered this further and found that compared with students that did not use cannabis at least once
Problem: An infant with known congenital heart disease presents with weight loss, tachypnea, and hepatomegaly.
For a research topic on evaluating the access to health services for commercial sex workers as a mixed method approach provide the methodology
The healthcare provider ordered a urine culture for a client. Which item would a nurse need for a urine specimen collection from an existing indwelling
The nurse practitioner (NP) evaluates a client with complaints of a burning sensation in the chest that often occurs after meals and is exacerbated
I am writing a dissertation topic on the utility of community based interventions in post exposure support to survivors of IPV in uMzingwane district
A 12-month-old child presents with fever of 100.9, lethargy, vomiting and tachypnea. The history is significant for recent hand-foot-mouth disease infection.