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The barometric pressure was 768.6 mmHg when the open end manometer attached to a flask holding a gas read 13.0 mmHg. (mercury level highest on the side connected to the flask.) what is the pressure of the gas in the flask in kilopascals?1.00 atm = 101.3 kPa
How much heat (in kJ) is evolved in converting 1.00 of steam at 150.0 to ice at -55.0? The heat capacity of steam is 2.01 and of ice is 2.09.
The vapor pressure of ethanol is 60.1 torr at 25.0 degree C, and its molar heat of vaporization is 39.3kj/mol. Estimate the temperature at which the vapor pressure of ethanol would equal 350. torr?
Calculate the concentration of Calcium (MW 40.078 g/mol) in the H2O in units of gram per 100 mL and calculate the concentration of Calcium (MW 40.078 g/mol) in the H2O in units of gram per 100 mL.
A 91 gram solution of silver nitrate contains 8 grams of AgNO3. What is the percent by mass of silver nitrate in this solution.
Traces of toxic, man-made hexachlorohexanes in North Sea sediments were extracted by a known process and by a new procedure, and measured by chromatography.
Extraction procedures have shown that nitrogenase contains an iron-sulfur cluster, Fe4S4, where the atoms of each type are arranged alternatively at the corners of a cube.
What mass of potassium carbonate K2CO3, must be weighed out to prepare 125.0mL of a 0.0500M solution of salt?
explain why ethanamine (ethylamine) initially forms a white precipitate when added to a solution of aqueous copper sulphate (CuSO4).
Lidocaine is thought to bind to receptors in its methylated form. identify in writting the atoms or groups in the compound that could be involved in its binding to a receptor via- hydrogen bonding (1 example)
What is the theoretical amount of oxygen required for the fuel mixture? What amount of air is added to the fuel mixture?
If the temperature is 22 degrees C, the total pressure in the tank is 3.50 atm, and the density of the gas in the tank is 1.17 g/L, what is the partial pressure of H2?
Two groups of students prepared the compound acetamide. Group A isolated is a solid with a melting point of 80.5 degrees C. Group B obtained a compound with a melting point of 74-77 degrees C
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