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A sample of a gas at 0.91 atm occupies a volume of 374 mL. If the temperature remains constant, what will be the new pressure if the volume increases to 265 mL?
Calculate the mass in metric tons of a cube of Au that is 36.1cm on each side? It is given that density of gold- 19.3 g.cm 3 , (1 metric ton-100kg)
A cumbustion analysis was carried out on 1.621g of newly synthesize compound which was known to contain only carbon,hydrogen and oxygen.
What is the molaity of a solution prepared by dissolving 75.8 of ethylene glycol, HOCH2CH2OH, in 1.45 L of water? assume the density of water is 1.00 g/mL.
A 2.00-g sample of white solid was vaporized in a 345-mL vessel. If the vapor has a pressure of 985 mmHg at 158°C, what is the molecular mass of the solid?
Calculate the final temperature when a 29.0 gram sample of ice at 0oC is placed into a styrofoam cup containing 115 grams of water at 75.7 oC. Assume that there is no loss or gain of heat from the surroundings.
When 4.03 g of CH3OH was mixed with 6.33 g of O2 and ignited, 3.92 g of CO2 was obtained. What was the percentage yield?
Enough of a monoprotic acid is dissolved in water to produce a 0.0189 M solution. The pH of the resulting solution is 6.25. Calculate the Ka for the acid.
Calculate the reaction Zn(s) + 2 HCl(aq) → ZnCl2(aq) + H2(g) What mass of ZnCl2 (MW = 136.3 g/mol) can be prepared from the reaction of 3.27 grams of zinc
during one of the processes at the plant. The two liquids are blended until a specific gravity of 1.445. Determine the mole percentage of the two components in the blend.
A solution of M(NO3)2 is electrolyzed. When a constant current of 2.50 amperes is applied for 35.0 minutes, 3.06 grams of the metal M is deposited. calculate the molar mass of M and identify the metal
a gas sample occupies 4.20 l under a pressure of 800 torr at 350K.At what temperature will it occupy 3.60 L at the same pressure?
an electron is confined to a one dimensional box of length l it falls from the second energy level to the ground state and releases a photon with a wavelength of 322 nm. what is the length of the box
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