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Compute the typical thermal energy of a water molecule at normal conditions: (kB T) and compare it to the answer of the previous problem (previous problem and answer listed below), where you computed the work needed to lift a molecule by a certain distance. Based on this comparison, the thickness of the Earth's atmosphere is about: (Show work)
a. 10 km
b. 1000 km
c. 1 km
d. 100 km
previous problem: How much work is needed to lift a water molecule by 15 km?
Pretend that the gravity force is the same throughout. Give answer in Joules, 2 significant digits, do not write down the units. answer: W = 18 * 1.67e-27 * 9.8 * 15e3 = 4.5e-22
Caculate the kinetic energy of a mole of oxygen atoms, all moving at a speed of 400 m/s (10000 mph).
a sample of oxygen occupies 178 mL in a cylinder shown at a barometric pressure of 734 torr and 25 degrees Celcius. If the piston is pushed in and compresses the oxygen sample to 134 mL, what is the pressure (in torr) of the gas?
determined that each molecule of the unknown base could accept two protons. What is the molar mass of this unknown compound?
When a catalyst is added the reaction 2SO2(g)+O2(g)?2SO3(g) takes place. At equilibrium the total pressure is 4.05atm . Find the value of Kc.
How do you calculate the force of water hitting a concrete cylindrical pole. The velocity of the water is 2 ft/s, the depth of the water is 10 ft, and diameter of the pole is 3 ft. So what would be the total force exerted on the pole by the water?
A turn-of-the-century chemist isolated an aromatic compound of molecular formula C6H4Br2. He carefully nitrated this compound and purified three isomers of formula C6H3Br2NO2, one of which was obtained in very small amounts. Propose a structure fo..
predict the formula of a compound that presumably would result from the reaction between magnesium and topaline, and name the compound.
What is the effect of raising the temperature or increasing the carrier gas flow rate on the ability to resolve two closely
Calculate the radiation dosage (in grays) for an 77-kg person that is exposed for 7.0 seconds to a 3.0 Ci source of beta radiation. Assume that 100% of the radiation is absorbed
if 1.205 g of KHP required 25.25 mL of NaOH solution for complete neutralization, what is the molarity of the NaOH sodium hydroxide solution?
The concentration of Fe2+ in a sample of water is 350 mmol/L At what pH will 99% of the Fe2+ be precipitated as Fe(OH)2? Ksp = 7.9 x 10-15
if 4.50g of methane gas is introduced into an evacuated 2.00 L container at 35 celcuis what is the pressure in the container?
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