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In the Lotka-Volterra predator-prey model dx/dt=-ax +bxy, dy/dt=ey-cxy where x(t) is the predator population as well as y(t) is the prey population, explain what does the coefficient c represent?
A) the predator die-off rate
B) the prey growth rate
C) the increase in the predator population due to interactions with the prey
D) the decrease in the prey population due to interactions with the predator
"What was the % recovery (by mass) of product based on the mass of crude product?" The starting unkown material weighed .2415g, the melting point of just the sample was 51.4-95.2 degrees C,
The three-dimensional structure of the eclipsed conformation and the staggered conformation of ethane Utilize plain lines, solid wedges, and dashed wedges
The concentrationof the alkane C20H42 (FM= 282.55) in a particular sample in rain water is 0.2ppb. assume that the density of the rain water is close to 1.00 g/ml and find the molar concentration of C20H42.
How many grams of Fe(NO3)3 · 9 H2O are required to prepare 300.0 mL of a 0.249 M solution of Fe(NO3)3 · 9 H2O?
One of the constituents of turpentine is a-pinene, formula C10H16. The following scheme (called a road map) gives some reactions of a-pinene. Determine the structure of a-pinene and of the reaction products A-C.
How can you tell when looking at organic compounds what is saturated? Here are some examples?
A certain substance has a heat of vaporization of 46.01 kJ/mol. At what Kelvin temperature will the vapor pressure be 3.50 times higher than it was at 351 K
A beaker contains 100 grams of 0.50 M NaCl. If you transfer 50 grams of the solution to anouther beaker, what is the molarity of the solution remaining in the first beaker?
How many calories are required to warm 15.0 g of water from 75 C to 100.0 C and convert it to steam at 100.0 C? The heat of vaporization of water is 540 cal/g.
In an experiment, at this temperature, 1.10 mol of H2 and 1.10 mol of F2 are introduced into a 1.08-L flask and allowed to react. At equilibrium, all species remain in the gas phase.
when a mixture at 273 K is heated to 473 K, how many different chemical changes occur? How many physical changes occur?
Why is concentrated sulfuric acid employed in the nitration of methyl benzoate reaction. What is the electrophile that is produced by the reaction of sulfuric acid and nitric acid
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