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The equilibrium constant for the reaction of bromine with chlorine to form bromine monochloride is 58.0 at a certain temperature.
The combustion of octane produces carbon dioxide and water. If you start with 10.0 mol of octane, what mass of water (in grams) would you expect to produce?
Calculate the minimum volume of distilled water, in liters, necessary to completely dissolve a 7.5 g sample of AgBr (s) at 298K. The molar mass of AgBr is 188 g mol.
Aluminum reacts with excess hydrochloric acid to form aqueous aluminum chloride and 36.8 mL of hydrogen gas over water at 27°C and 764 mmHg. How many grams of aluminum reacted?
Upon decomposition, one sample of magnesium fluoride produced 1.65 of magnesium and 2.57 of fluorine. A second sample produced 1.29 of magnesium. How much flouride (in grams) did the second sample p
Aluminum has a specific heat of 0.900 J/g·°C. How much energy is required to raise the temperature of 160. g of aluminum from 20.0°C to 183.0°C?
A flask containing gaseous N2 is irradiated with 25 nm light. The irradiated moleculars of N2 can absorb the energy from the light photons. Using the following information indicate what species can
How many grams of water can be cooled from 33 to 20 by the evaporation of 37 of water? (The heat of vaporization of water in this temperature range is 2.4 . The specific heat of water is 4.18 .)
A 4.867 g sample of a monoprotic acid was dissolved in water. It took 30.24 mL of a 0.1578 M NaOH solution to neutralize the acid. Calculate the molar mass of the acid.
Calculate moles of scetylsalicylic acid present in the aspirin sample. What mass (g) of scetylsalicylic acis is present in the sample? Calculate the percent purity of the aspirin sample.
You have to prepare a {rm pH} 4.77 buffer, and you have the following 0.10,M solutions available: formic acid, sodium formate, propionic acid, sodium propionate, phosphoric acid, and sodium dihydrog
A 9.36-g piece of platinum is heated to 98.6 °C in a boiling water bath and then dropped onto ice When the metal's temperature has dropped to 0.0 °C, it is found that 0.37 g of ice has melte
When 6.6 g solid NaOH is dissolved in 30.0 g of water in a coffee cup calorimeter, the temperature rises from 25.5 to 36.1. How much heat is produced by the dissolution process? the specific heat i
Mercury has a density of 13.6 g per mL. A barometer holding 9.50 mL of mercury has broken. The cost of mercury disposal is based on mass, how many kilograms of mercury were in the barometer?
A certain first-order reaction has a rate constant of 3.90×10-3 at 45. How many minutes does it take for the concentration of the reactant to drop to 6.25 of the original concentration?
A particular first-order reaction has a rate constant of 1.35 x10^2 s^-1 at 25 degrees Celsius. What is the magnitude of k at 95degress Celsius if Ea= 55.5 kJ/mol?
A certain first-order reaction (A-->product) has a rate constant of 3.90×10-3 s-1 at 45C . How many minutes does it take for the concentration of the reactant,(A) to drop to 6.25% of the o
Express your answer in condensed form in order of increasing orbital energy as a string without blank space between orbitals. For example, should be entered as [He]2s^22p^2.
A piece of silver (25 g) is heated to 100 degrees celsius, then dropped into 42.5 g of water with a temperature of 21.7 celsius. Assume they come to the same temp, what is the final temp of the sil
Calculate the mass of silver chloride required to plate 175 {rm mg} of pure silver.
When heated, lithium reacts with nitrogen to form lithium nitride. What is the percent yield of the reaction if 13.9 of Li is heated with 33.3 g of N2 and the actual yield of Li3n is 6.64 g?
Calculate the heat released when 1.42 L of Cl2(g) with a density of 1.88 g/L reacts with an excess of sodium metal at 25°C and 1 atm to form sodium chloride.
The specific gravity of mercury is 13.64 . What would be the mass of a sample of mercury that occupies a volume of 4.55 mL?
What is the molality of a solution prepared by dissolving 413 mg of KBr in 6.45 mL of water at 25.0 0C. The density of water at 25.0 0C is 0.997 g/mL.
What mass of titanium displaces 65.2 mL of water at 25 ^circ {rm C}