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Question: Bacterial growth Suppose that, for a certain population of bacteria, growth occurs according to
Dy/dt = ky (t in hours)
If the doubling rate depends on temperature, find how long it takes for the number of bacteria to reach 50 times the original number at each given temperature in parts (a) and (b).
(a) At 90°F, the number doubles after 30 minutes (½ hour).
(b) At 40°F, the number doubles after 3 hours.
What are the transition metals in a periodic table ?
Problem- Given a vapor pressure of toluene of 21 mm Hg, at 760 mm Hg, what is the equilibrium concentration for toluene
a 16 ounce speciality coffee drink contains 254 mg caffeine. if all the caffeine is extracted and dissolved in an equal
for the reaction below ?h -296 kj per mole of so2 formed.ss o2g ? so2gwhat quantity of energy is required to break up
What would be the average atomic mass of the element
Determine the Volume of air and partial pressure of nitrogen, oxygen, water vapor and air
Molar mass has the units of grams/mole. Molar mass serves as a conversion factor between numbers of moles and mass. If you know how many moles you have, you can calculate their mass; if you know the mass of a sample, you can calculate the number o..
Write down the reactions that occurred in each test tube if no reaction occurred then put NR on the product side Test tube.
Based on the balanced chemical equation, given that 2.0 g of Na2CO3(molecular weight = 58.44 g/mol) was added to the reaction, how many mL of H2O (molecular weight = 18.00 g/mol) were produced? Remember that moles = mass/molecular weight and that ..
What gas was produced by the decomposition of hydrogen peroxide? What happens when a smoldering toothpick comes in contact with the gas?
The elemental selenium dispersed in a dandruff control shampoo was determined by suspending a 10.0 mL sample in a warm ammonical solution that contained an excess of silver nitrate to give the following
You are assigned to separate a mixture of benzoic acid and 2-naphthol using acid base extraction. You are given two possible liquids to dissolve the sample in: ethyl acetate and toluene. Which solvent would be a better choice? Why?
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