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a 0.050 molar solution of a weak monobasic (accepts one proton) substance, B has a pH of 10.98 Determine the ionization Constant Ka of this acid.
a 5.0 dm3 sample of oxygen at a pressur of 200 kpa and 2.0 dm3 sample of nitrogen at a pressure of 500 kpa are introduced into a 2.5 dm3 vessel. what is the total pressure in the vessel?
A hydrate of calcium chloride contains 49.3% water and has a formula weight of 219 g/mol. Calculate the molecular formula of the hydrate.
Gasohol contains ethanol (C2H5OH) which when burned reacts with oxygen to produce CO2 (g) and H2O(g). How much heat is produced when 12.5 grams of ethanol burns.
What is the final temperature (in °C) of 1.53 g of water with an initial temperature of 12.0°C after 7.478 J of heat is added to it?
calculate the volume in mililiters (mL) of 6 M NaOH needed to make 500 mL of a 0.100 molar (M) NaOH solution.
Calculate the temperature change which will be caused by the following process: 0.640 moles of NH4Cl are dissolved in 1.00 L of water.
Metals Covalently Bonded to Benzene, Specifically interested to know why you don't see metals bonded to benzene with a covalent sigma bond. I am not interested in metal benzene complexes.
If 3.0 ml of distilled water is added to 2.0 ml of 0.35 M CoCl2 solution , what is the concentration of the resulting solutions?
In the laboratory, a student named Georgia weighed 5.05 grams of an unknown solid mixture containing benzoic acid, copper (II) sulfate and sand.
describe a working voltaic cell that incorporates a standard nickel half-cell and that has a net cell potential greater than 1 V. Include: 1. balanced equations and Enet calculations
0.0010 mg of H, 0.0116 mg of C, and 0.0310 mg of O. It was also determined that the unknown compound had a molecular weight of 90.0 g/mol.
when sodium azide , NaN3 , is activated in an automobile air bag , nitrogen gas and solid sodium are produced . if 0.0500 moles of NaN3 react , what mass , in grams , of nitrogen would result ?
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