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The estimated average concentration of NO2 in air in the United States in 2006 was 0.016 ppm.
(a) Calculate the partial pressure of the NO2 in a sample of this air when the atmospheric pressure is 755 torr (99.1 kPa).
(b) How many molecules of NO2 are present under these conditions at 20 °C in a room that measures 15 X 14 X 8 ft?
if 18.6 of 0.800 solution are needed to neutralize 5.00 of a household ammonia solution what is the molar concentration
Which of the following assumptions of the kinetic molecular theory of gases is not valid for real gases at high pressure. A) The volume of the gas particles is much smaller than the distance between the gas particles.
What is the pH of a 0.50 M CH3COOH and 0.10 M NaCH3COO solution. The p Ka of acetic acid is 4.76.
How many moles of methane are produced when 82.6 moles of CO2 gas react with excess hydrogen gas? CO2+4H2----->CH4+2H2O I am having problems trying to set this problem up correctly, any help would be appreciated
Calculate the mole fraction of octane in the vapor at the above temperature.
Compute the finals temperature of the ethylene within the cylinder. Explain what fraction of ethylene remaining in the cylinder is present as a liquid
a student pumped some helium gas into a balloon. when this balloon was connected to an open ended U-tube containing some oil (density=9.18 g cm-3 the oil was displaced 112 mm towards the atmosphere. what is the pressure of the helium inside this b..
Calculate the pH value of solution (a) after 10.0 mL of NH3 solution have been added and (b) after 25.0 mL solution have been added (Ka for NH4+ = 5.6 x 10^(-10).)
given composition of air n2 78.09o2 20.94 ar 0.93a calculate the of molecules of n2 ofo2 and of ar in 1.00 l of air
3.8 g of a hydrocarbon fuel is burned in a calorimeter that contains 234 grams of water initially at 25.00 ? C. After the combustion, the temperature is 26.55 ? C
Ag -> ag+ + 1e H+ + 1e -> H2 and then how would I calculate the Ecell for each one if I am given +0.80 volts on the volt meter for the first one?
When 27.0 grams of an unknown liquid at 39.00 °C are added to 17.7 grams of 41.70 °C water, the temperature of the final mixture is 39.69 °C. What is the specific heat capacity of the unknown liquid
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