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Identify the factors that affect toxicity in a population. Pick three of the factors and provide a brief discussion on how that factor can affect the health of a population.
250 words
If caffeine is soluble in methanol as well as methylene chloride then why couldnt I use methanol to extract caffeine from the aqueous portion. and why did I extract the aqueous phase two times with 50ml of DCM rather than once
Estimate the approximate concentration of a typical enzyme and the number of the enzyme molecules inside each cell? Make any reasonable assumption that will help you calculate the numbers
Explain what mass of calcium would have to be added to the second container for it to hold the same number of atoms as the first container
CH4(g) + 2 O2 --> CO2(g) + H2O(g) suppose 1.5 mol of methane is allowed to react with 4 mol of oxygen. what is the limiting reagnant?
Explain how many moles of hydrogen gas would be wanted to react with excess carbon dioxide to produce 99.1 moles of water vapor
If in an experiment 42g of CO is burned with excess oxygen gas. Calculate how many grams of CO2 will be formed in the process.
The element mercury, chemical symbol Hg, has an atomic number of 80. How many protons, electrons and neutrons does an atom of Mercury contain
sample of an unknown was dissolved in 10.7 g acetic acid. If the freezing point depression of the solution was 4.14°C, find the molar mass of the unknown
the vapour pressure of heptane is 0.121 atm and vapour pressures of octane is o.o41atm. What is the total vapour pressure of the solution. What is the mole fration of heptane in vapour above this solution
how many milliliters of magnesium metal with a density of 1.74 gml are needed to produce 102.3 grams of magnesium
Molten carbonate fuel cells fueled with H2 convert as much as 60% of the free energy released by the formation of water from H2 and O2 into electrical energy. Determine the quantity of electrical energy obtained from converting 1 mole of H2 into H..
50mL of 0.1M aqueous solution of some organic compound was brought in contact with 7mL of octanol at 20oC. After equilibration GC analysis of octanol phase shows component concentration of 0.4M. Explain what is the portioning coefficient of this c..
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