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How do storms, diseases, and predators affect coral reef communities? What are the similarities and differences in their effects?
The gaseous hydrocarbon acetylene, C2H2, is used in welders torches because of the large amount of heat released when acetylene.
Explain why the issue of Global warming effects on the ecosystem is a good topic to study.
Is it possible to calculate concentration of a solution, OH- concentration, and H+ concentration from just a pH given (no specific base or acid)?
Why are birds often selected indicator species? A. They react to change quickly. B. They're high on the typical chain.
A diprotic acid, H2A, has the following ionization constants: Ka1 = 1.1E-3 and Ka2 = 2.5E-6. In order to make up a buffer solution of pH 5.8.
Calculate the pH of the 0.20 M NH3 and 0.15 NH4Cl buffer. What is the pH of the buffer after the addition of 10.0 mL of 0.10 M HCl to 57.5 mL of the buffer.
Corporations and sustainable businesses.As an aspiring applied anthropologist, I have opted to try and come up with a convincing theory
After determining the rate of occurrence, break the occurrences down into age groups, race, and sex.
A reacts spontaneously with 1mol/L BNO3, 1mol/L D(NO3)2 and dilute sulfuric acid.A does not react with 1mol/L C(NO3)2.
A buffer solution is made of 0.100 M HOCl and 0.250 M NaOCl. What is the pH of the resulting solution when a 15.0-mL portion of 0.200 M HCl is added to 100.0 mL
Peony may have evolved to cover the bud with the waxy coating.Why the peony may have evolved to cover the bud with the waxy coating?
If equal molar amounts of Na2HPO4 and NaJpo4 are mixed in water, calcuate the resulting pH. The pKas of phosphoric acid are 2.1, 7.2, 12.4.
Habitat and environmental variations.Direct climate affects on species, For example, the birds being added to the endangered list
Which is the correct order of increasing (from least to most reactive) activity for these metals?
Explain how physical and chemical laws affect a living organism. Explain ow an organism has evolved to adapt to its physical or chemical environment.
With a Ka = 5.8 x 10^-10 it is a weak acid that behaves as a monoprotic acid. Assume you titrate 20.0 mL of 0.11 M boric acid with 0.100 M NaOH. (Show work)
Discuss the various sources of human stem cells, their characteristics, and potential for therapeutic use. What are some ethical concerns?
What is the name of the salt formed by the complete neutralization of sulfuric acid with lithium hydroxide?
A sample of concetrated nitric acid has density of 1.41g/ml and contains 70% HNO3, by mass.
Explain the infective stages of animal parasites (cestodes, protozoa, nematodes) and how they respond in environmental conditions
Development of antibiotic resistant bacteria is a great example of the 'survival of the fittest' phenomenon.
Natural selection and allele frequency.A population of Madagascar hissing cockroaches lives in a woodpile
Given the following table of Ksp values, determine which compound listed has the smallest solubility compound Ksp
Who were a three scientist whose work was fundamental to Darwin's theory? How did their thinking influence his?