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Draw a dilution scheme that would produce countable plates if the original culture has 4,730,000 viable cells/mL.
Assume that this rate remains constant for a short period of time What is A 5.00min after the reaction is started? At what time after the reaction is started will A= 0.565M?
A smple of mixture of NaCl, Caco3 and SiO2 weighed 7.30 grams. During the water wash the sample lost 2.21 grams. After treatment with HCL, the sample weighed 2.05 grams.
Calcium hydroxide and sulfuric acid can react to produce calcium bisulfate and water. When 0.0720 mol of sulfuric acid are reacted with 0.0240 mol of calcium hydroxide, how much calcium bisulfate, Ca(HSO4)2, will be produced?
For a protein with a molar mass of 1 x10 6 u calculate the molar concentration required to obtain an osmotic pressure of 10 matm at 25 degrees C
A solution is prepared by adding 0.500 g of solid NaCl to 50.0 mL of 0.100 M {CaCl_2}. What is the molarity of chloride ion in the final solution? Assume that the volume of the final solution is 50.0 mL.
when 0.500 l of a 1.00 m solution of Pb( NO3) 2 is mixed with 0.500 l of a 1.00 m solution of Kl how many grams of lead(II) iodide are formed
To prevent the presence of air, noble gases are placed over highly reactive chemicals to act as inert "blanketing" gases. A chemical engineer places a mixture of noble gases consisting
To construct a detailed sequence of reactions to synthesize 4-cyclohexyl-3-methyl-1-butanol as the MAJOR substrate product.
For organic chemistry, what is a concerted shift? how do things like acids or heat affect them? what other factors effect them?
whats the amount of heat required to raise the temperature of 165 g of water from 12.0 C to 88.0 C (sp. heat of H20(l)= 4.18 J/g)
Conjugated diene addition reaction, a) When HCl is added to 1,3-butadiene either 3-chloro-1-butene or 1-chloro-2-butene forms. Which product is more stable? Explain.
Find the Ksp range for PbI2(s) (hint: you will need to apply the dilution formula to the concentration of Pb(NO3)2 and KI. Think about what you will need to find the Ksp and look for those pieces of information in the video.
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