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Determine the moles of KHCO3 that reacted from the mass of KHCO3 used and its molar mass
Calculate the standard free energy change at 298K for the conversion of diamonds to graphite and determine whether or not the reaction is spontaneous under standard conditions:
What is the expected pH of this solution. Estimate the free carbonate ion concentration in this solution. Estimate the concentration of carbonic acid in solution.
Single displacement, double displacement, and decomposition reactions may all be redox reactions. Identify the type of redox reactions
What is the theoretical yield(in grams) of aspirin ,C9H8O4, when 2.00g of salicylic acid,C7H6O3, is reacted with4.00g of acetic anhydride
It is important that the flask used for molar mass determination is completly dry before adding volatile liquid unknown to it.why? what would happen to any droplets of wash-water remaining in the flask when the temperature of the flask is raised t..
How much of the solution is needed?
Calculate the quantity of heat energy in kilocalories evolved when 75 g of liquid water forms ice at 0 0C. (heat of solidification = 80 cal/g).
Question- Calculate the pH of a solution prepared by dissolving 0.37 mol of formic acid (HCO2H) and 0.23 mol of sodium formate (NaCO2H) in water sufficient to yield 1.00 L of solution. The Ka of formic acid is 1.77x104.
what is the balanced chemical reactions when carbon dioxide reacts with water? how can carbon dioxide change the ph of
a sample of oxygen with a pressure of 400 mmhg contains 2.0 mol of gas and has a value of 4.0l. what will the new
Describe how you could make 1L of a 0.1M potassium phosphate buffer at pH=7. The reagents available to you are solid KH2PO4 (m.w. 136.1g/mol) and K2HPO4 (m.w.174.2 g/mol). The pKa for the second ionization of phosphoric acid is 6.86.
Fill in the missing mass number and atomic number for each of these particles or types of radiation
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