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Determine the final temperature of a gold nugget (mass = 376g) that starts at 398 K and looses 4.85 kj of heat to a snowbankwhen it is lost. The specific heat capacity of gold is 0.128J/g.
a 10 ml sample of a solution of pbclo32 was diluted with water to 170 ml. a 100 ml sample of the dilute solution was
If .43 g of aluminum foil was dissolved in sufficient 3M KOH solution, and the solution was acidified with 4M H2SO4, what was the theoretical yield of KAl(SO4)2 * 12H2O? If only 5.87g of alum were obtained as product from the synthesis described
If your chemistry book weighs 2 kgs, and you needed to lift the book from the floor to a shelf 150 cm high, calculate the energy in J required to lift the book from the floor to the shelf 100 times.
How do you who that both ZnS and CuS will precipitate at pH8. 2) Show that only CuS will precipitate when (H3O+) = 0.3M
In terms of ionic equilibria and solubility product theory, explain dissolution of silver chloride in aqueous ammonia and reprecipitation with nitric acid
Should you install a solar water heater? The average home has a 200 liter hot-water tank, which is effectively drained and replenished three times per day.
The maximum kinetic energy observed for these electrons is 1.488 x 10?19 J/electron. What is the wavelength of a laser which will turn the photocell on and cause electrons to be ejected which have absolutely no excess energy
If the minimum amount of solvent is recrystallized at 12.8 g by heating it to 70 C and sampling it in an ice water bath what is the minimum percent recovery of the recrystallized material?
A copper ore is 23.5% copper by mass. How many grams of copper are in 250.0 grams of this copper ore
Dry air (0% humidity) is approximately 78% N2, 21% O2, and 1% Ar by moles. Calculate the molar mass and density of dry air at 0 °C and 1.0 atm. Assume ideal behavior and use two significant figures in your answers.
thermal equilibrium is reached, the temperature of the aluminum sample plus water mixture is 29.4 degrees C. What is the specific heat of aluminum
hemiketals can be formed under both basic and acidicconditions while ketals require acidic conditions for
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