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1.57 atm of C2H2 and 2.73 atm of O2 are combined in an empty, sealed 250.0ml flask at 23.0 degrees Celcius. The flask is heated to 175 degrees celcius and the reaction commences. Assuming 100% yield, what is the partial pressure of carbon dioxide at the end of the reaction? What is the mole fraction of carbon dioxide at the end of the reaction?
what is the percent by mass of nahco3 in a solution containing 30 g of nahco3 dissolved in 500 ml of
A 50.0 kg mixture of salt and water is 15.0% (by mass) salt. give the mass of salt and water in the mixture
Cl revealed that it contains 33.33% C atoms by number and has a molar mass of 248.75 g/mol. What is the molecular formula of this compound?
Atmospheric pollution is a problem that has recieved much attention. not all pollution, however, is from industrial sources. Volcanic eruptions can be a significant source of air pollution.
Write complete and balanced net ionic equations for the reaction that occurs between the following pairs of reagents. If no reaction occurs, so state.
formic acid hfor has a ka equal to about 1.8x10-4. a student is asked to prepare a buffer having a ph of 3.4 from a
Approximately 12 million kilograms of phosphoric acid (H3PO4) are produced annually for fertilizers, detergents, and agents for water treatment. Phosphoric acid can be prepared by heating the mineral fluoroapatite (Ca5(PO4)3F) with sulfuric acid
How do you calculate the number of moles of all sulutes (including cations and anions): Please show how to solve the problem.
when doing a synthesis of 2-chloro-2-methylbutane 1. Why must the reaction be carried out at room temp 2. Why is the crude product washed with sodium bicarbonate
Helium gas at constant pressure of 7.4 atm, expands in volume from 21.3 L to 79.2 L. The temperature is held at 278 K. Calculate the work done by the gas (in joules).
If the equilibrium concentration of Cd2+ ion is 1.5 X 10-6 M, calculate the equilibrium concentration of OH- in an aqueous equilibrium between solid Cd(OH)2 and its ions. (Ksp for Cd(OH)2 is 2.5 X 10-14)
For the formation of your photchromic imine you use ammonium bromide. Give 2 reasons why you cannot use concentrated HBr.
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