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If an open-tube manometer is open to the atmosphere (760 torr), themercury levels are equal. What is the pressure in the flask when agas is contained in the inside in torr when h=118 and 215. What is the pressure in the flask when the atmospheric pressure is 635torr.
calculate the weight and number average molecular weights as a function of conversion for the linear polycondensation
A 113L sample of helium at 27 degrees Celsius is cooled at a constant pressure to -78 degrees Celsius. calculate the new volume of the helium.
When 5.00 × 1022 molecules of ammonia react with 4.00 × 1022 molecules of oxygen, how many grams of nitrogen gas are produced? 4NH3(g) + 3O2(g) → 2N2(g) + 6H2O(g)
a sample of hydrogen was collected over water at 23oc and an atmospheric pressure of 735 mmhg. what is the pressure of
What is the molarity of each ion in a solution prepared by dissolving 0.550 g of Na2SO4, 1.192 g of Na3PO4, and 0.228 g of Li2SO4 in water and diluting to a volume of 100.00mL?
In the IUPAC naming system, all alkanes end in the suffix ane and begin with a prefix determined by the number of carbon atoms in the molecule
What is the age of a rock whose Argon 40 / Potassium 40 ratio is 1.55. The half life of Potassium 40 is 1.28 x 10^9 years.
a substance has a specific heat capactiy of 2 jg c. how many joules are needed to raise the temperature of 30 g of this
what is the molar concentration of a h3po3 solution if 150.00 ml of the solution was required to neutralize 75.00 ml of
One mole of an ideal gas is expanded from a volume of 1.00 liter to a volume of 4.90 liters against a constant external pressure of 1.00 atm. How much work (in joules) is performed on the surroundings?
A 2.4375 g sample containing a mixture of KClO3 and NaCl is heated and under goes a mass loss of 0.6191 g. What is the percent of KClO3?
effuse through a membrane. How long would it take the same number of moles of Ar(g) to effuse through the same membrane?
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