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What is the pressure (in atmospheres) of the gas inside the container connected to an open-end, mercury-filled manometer as shown in the picture? The atmospheric pressure is 0.95 rm atm.
The hydrogen gas generated is collected over water at 25.0°C. The volume of the gas is 295 mL measured at 1.00 atm. Calculate the number of grams of sodium used in the reaction. (Vapor pressure
Tincture of iodine is I2(s) dissolved in ethanol, C2H5OH. How many grams of solvent are present in 1000. g of this solution?
If the ground temperature is 20?C, the lapse rate is zero, and the balloon is in hydrostatic equilibrium at a cruising altitude of 900 hPa, determine the temperature of the air inside the balloon.
It takes 55.0 to raise the temperature of an 11.7 piece of unknown metal from 13.0 to 24.0. What is the specific heat for the metal?
A 530. g piece of copper tubing is heated to 89.5°C and placed in an insulated vessel containing 159 g of water at 22.8°C. Assuming no loss of water and heat capacity for the vessel of 10.0
In the titration of 100.0 mL of 0.100 M methylamine, CH3NH2 (Kb = 3.7 * 10-4), with 0.250 M HCl, calculate the pH under the following conditions.
How many grams of sodium formate, NaCHO2, must be added to 750.0mL of .250 M of formic acid, HCHO2, to obtain a buffer with pH of 5.5
When monitoring the reaction between benzene and 2-chloro-2-methyl-propane using FeBr3 as the catalyst, researchers observed the formation of a new alkyl halide. Draw the structure of this compound
Consider the titration of 100.0 mL of 0.200 M acetic acid (Ka = 1.8 10-5) by 0.100 M KOH. Calculate the pH of the resulting solution after the following volumes of KOH have been added. Enter all ans
What masses of calcium sulfate and phosphoric acid can be produced from the reaction of 1.0 kg calcium phosphate with 1.0 kg concentrated sulfuric acid (98% H2SO4 by mass)?
when 50.0 gram of metal at 75.0 C is added to 100 grams of water at 15.0 C the temperature of the water rises to 18.3 C. Assume that no heat is lost to the surroundings. What is the specific heat of
The volume of the solution is 904.7ml. What is the mass percent of KOH? What is the mole fraction of KOH? What is the molality of the solution?
A sample of nitrogen gas occupies a volume of 3.87 liters at 52.8oC and 2.11 atm. What will the new temperature (in °C) when the volume increases to 4.55 liters and the pressure remains constant
An elemental has a mass of 10.3 grams. If the volume is 58.4 liters and the pressure is 758torrs at a temperature of 2.5 celsius, what is the gas using the ideal gas laws?
when silver nitrate reacts with zinc chloride, silver chloride and zinc nitrate are formed. If you react 2.22 g of silver nitrate with 4.82g of zinc chloride, which substance is the limiting reagen
How many moles of Magnesium oxide are produced by the reaction of 3.82g of Magnesium nitride with 7.73g of water?
Write the word, formula, and chemical equations for the reaction between hydrogen sulfide gas and oxygen gas that produces sulfur dioxide gas and water vapor.
If the molal boiling point constant for water (Kb) is 0.51 °C/m, what would be the boiling point of this solution? Show all of the work needed to solve this problem.
A nurse has to administer a 1000ml IV solution in 8 hours. Find the number of drops per minute knowing the IV solution delivers 20 drops/ml.
When 75.0 of a 0.100 lead nitrate solution is mixed with 100.0 of a 0.190 potassium iodide solution, a yellow-orange precipitate of lead iodide is formed what is the molarity of each resulting ion?
Calculate the concentrations of all species in a 0.690 M Na2SO3 (sodium sulfite) solution. The ionization constants for sulfurous acid are Ka1=1.4x10^-2 and Ka2=6.3x10^-8.
Magnesium carbonate was added to 25cm cubed of 2.0 mol/dm cubed of nitric acid. All the nitric acid is used up in the reaction. Calculate the volume of gas obtained in the reaction.
Calculate the amount of work done against an atmospheric pressure of 1.00 atm when 500.0 g of zinc dissolves in excess acid at 30.0°C.
Hydrocarbons are often reacted with steam to form H2, as shown for propane. Calculate Kp for this reaction at a particular temperature, given: