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A 145 g aluminum cylinder is removed from a liquid nitrogen bath, where it has been cooled to -196° C. The cylinder is immediately placed in an insulated cup containing 226 g of water at 15.0° C,. What is the equilibrium temperature of this system? If your answer is 0° C, determine the amount of water that has frozen. The average specific heat of aluminum over this temperature range is 653 J/(kg · K).
A 270- mL flask contains pure helium at a pressure of 749 torr. A second flask with a volume of 470 mL contains pure argon at a pressure of 730 torr what is the partial pressure of He?
what is the volume of 1 mole of Helium gas when the pressure is 1.47 atm and the temperature is 287 K.
The water level in a graduated cylinder initially at 220 rises to 279 after a piece of lead is submerged. What is the mass in grams of the lead.
Ethylene gycol has a density of 1.11g/mL. What is the volume of 30.0 g of ethylene glycol?
Describe how this observation is consistent with the law of conservation of charge.
Insoluble BaCrO4 precipitates when solutions of BaCl2 and Na2CrO4 are mixed. What is the maximum mass of BaCrO4 (MM=253 gmol¯1 ), in g
Calculate the pressure of 4 g of nitrogen gas in a 1 L container at 20.0 ?C.
What volume of 0.300 M CaCl2 is needed to prepare 240. mL of a solution which is 0.100 M in chloride ion.
A helium-filled weather balloon has a volume of 815 L at 22 oC and 752 mmHg. It is released and rises to an altitude of 7.16 km, where the pressure is 364 mm Hg and the temperature is -25oC
63mL of a 1.70 M solution is diluted to a volume of 218 mL. A 109mL portion of the solution is diluted using 117mL of water. What is the final concentration?
A compound composed of sulfur and fluorine is found to contain 25.24% by mass of sulfur. If the molar mass of the compound is 254.11 g/mol, what is its molecular formula?
Write the balanced equation for the complete combustion of each of the following compounds
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