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A solution is prepared by dissolving 13.4 g ammonium sulfate in enough water to make 100.0 mL of stock solution. A 12.00 mL sample of this stock solution is added to 57.00 mL of water. Calculate the concentration of ammonium ions and sulfate ions in the final solution.
How many moles of sulfate ions (SO2-/4) are present in 1.6 moles Al2(SO4)3
A 4.5 g nugget of gold absorbed 276 j of heat. What was the final temperature of the gold if the initial temperature was 25 OC ? The specific heat of gold is 0.129 j/g OC.
The atmospheric pressure 4.The volume for the vapor to occupy above the liquid 5.The temperature of the liquid
Copper has a specific heat of 0.092 cal/(g·°C). When 52.7 cal of heat is added to a piece of copper, the temperature increases from 22.4°C to 38.6°C. What is the mass of the piece of copper
Determine the partial pressure and total pressure of each gas in the vessel and process of reaction runs until eighty five of the Oxygen is used and the vessel get cooled to its starting or initial temperature.
Which graduated cylinder would have the greatest volume change if equal masses of Au and Pt are transferred to equal volumes of H2O in separate graduated cylinders? Density of gold = 19.31 g/cm3 , density of platinum =21.43 g/cm3
A 120-pound person uses 3 Calories per minute walking at a 20 min/mile pace. Approximately, how many miles would a person have to walk to burn off a scoop of ice cream (175 Calories)?
A piece of a newly synthesized material of mass 25.0 g at 80.0C is placed in a calorimeter containing 100.0 g of water at 20.0C. If the final temperature of the system is 24.0C, what is the specific heat capacity of this material?
An unknown Cu2+ sample gave an absorbance of 0.262 in an atomic absorption analysis. Then 1.00 ml of solution containing 100.0 ppm Cu2+ was mixed with 95.0 ml of the unknown, and mixture was diluted to 100.0 ml in a volumetric flask.
how many mols of H 2 can produce
if the freezing point of a 0.106m CH3COOH solution is -0.323 degrees celcius, what is the percent of acid that has undergone ionization?
The density of titanium metal is 4.51 g/cm^3 at 25 degrees C. What mass of titanium displaces 64.0 mL of water at 25 degrees C?
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