How many bacteria will there be in five hours and one day
A kind of bacteria has the very high exponential growth rate at 80% every hour. If there are ten bacteria, find how many there will be in five hours, one day, and one week.
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A solution of Ba(OH)2 is known to be 0.1364 M. Calculate the molarity of hydroxide ion in this solution? Suppose when Ba(OH)2 is totally dissociated in the solution.
Determine the magnitude of the rms magnetic field of the gamma-ray pulse at the surface of magnetar, supposing that the pulse radiates evenly outward in all directions. (Suppose a year is 365.25 days.)
Determine the pressure and the composition of air on the top of Mt. Everest, assuming that the atmosphere has a temperature of -20C independent of altitude (h=29141). Suppose when the air at sea level is 20% O2 and 80% N2.
Determine how long does it take electrons to acquire from a car battery to the starting motor? Suppose that the current is 280 A and the electrons travel via a copper wire having cross-sectional area 0.210 cm2 and length 0.830 m.
A wire is 0.79 m long and 1.5 mm2 in cross-sectional area. It carries a current of 6.0 A. If a 3.0 V potential difference is exerted between its ends. Compute the conductivity s of the material of which this wire is made up of.
Calculate the mole ration of conjugate acid to conjugate base for a buffer, by using the Henderson-Hasselbalch equation.
The farmhill nursery sells trees as well as other yard and garden items. Currently, the nursery has 10 fruit trees, 8 pine trees, and 14 maple trees. It plans to give four trees away at next saturdays lawn and garden show. The four winners can cho
Determine the numbers of photons per second are formed by an infrared lamp that consumes energy at the rate of 100 W and is 12 % efficient in converting this energy to infrared the radiation? Assume that the radiation has a wavelength of 1485 nm.
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Jane is doing a study about tattoos. She is interested in studying the idea of the "tramp stamp" (a tattoo in the small of a woman's back).
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