Explain the pressure and the composition of air
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.
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Determine the numbers of grams of H2SO4 (98.08 g/mol) can be totally neutralized by the 36.00 mL of 0.1500 M sodium hydroxide?
Compute the standard deviation for the 50 season ticket-holders.
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 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 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.
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.
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