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A substance has a vapor pressure of 77.86mm Hg at 318.3 K as well as a vapor pressure of 161.3 mmHg at 340. 7 K. Compute its heat of vaporization in kJ/mol.
Hypervenilation raises the pH of the blood in a condition known as respiratory alkalosis. Common treatment is to have the patient breathe into a paper bag,
solid nacl is added slowly to a solution containing 0.10 m agno3 and 0.20 m pbno32. ksp for agcl is 1.8x10-10. ksp for
How much energy (in kilojoules) is needed to heat 3.60 of ice from -14.5 to 26.0? The heat of fusion of water is 6.01, and the molar heat capacity is 36.6 for ice and 75.3 for liquid water.
chromium iii hydroxide croh3 is highly insoluble in distilled water but dissolves readily in either acidic or basic
a set of data gave an average unpopped corn kernel mass of 0.12 grams. how many kernels are in a pound 454 g of
a radioactive substance has a half-life of 46.5 minutes. how many grams of the radioactive substance will remain in a
An excited hydrogen atom emits light with a frequency of 1.141 multiplied by 1014 Hz to reach the energy level for which n = 4. In what principal quantum level did the electron begin?
Mg + 2HCl --> MgCl2 + H2 For a mass of 0.013 g Mg and 5.0 mL of 1.00 M HCl, in a flask with V = 140.612 mL at 23.5?C. Calculate the initial and final pressure (atm).
in an experiment 6.00 g of mgs was reacted completely with o2g to form mgos and 148.5 kj of heat was evolved. what is
Write the balanced equation for the reaction of sodium carbonate with lead (II) nitrates. And write the net ionic equation for the reaction.
Calculate the number of sodium ions in (6.107x10^1) g sodium phosphate. 2. An aqueous solution of 10.0 grams of ammonium sulfide is mixed with an aqueous soluion of 10.0 grams of copper (II) chloride. What is the formula of the compound that precipit..
The Cl- is at equilibrium across the membrane while the protein is inside the cell and cannot permeate the membrane. Determine the concentration of Pr+/- (in M)?
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