What is the molarity of the sodium carbonate
Assume you dissolve 6.73 grams Na2CO3 in enough water to make 250 mL of solution. What is the molarity of the sodium carbonate?
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the molar heat of vaporization at 298 K for diethyl ether is 26.0 kj/mol. How much heat would be requiered to vaporize 0.714 g of ether at 289 K?
If 10.7 mL of a 0,110 M NaOH is required to reach the first equivalence point of a solution of citric acid, how many mL of NaOH are required to completely neutralize this solution.
Why would it be difficult to determine the point where the limiting reactant changes if 13.0 mL of 1M HCl(aq) were used instead of 10.0mL of 1 M HCl and the mass of Mg was in the range 0.070g-.170g?
Calculate the mass of air in an air-filled tire and the mass of helium in a helium-filled tire. What is the mass difference between the two?
230 mL of an HCl solution with pH of 3.60 is added to 200 mL of an HNO3 solution. The resulting pH is 1.40. What was the pH of the original HNO3 solution?
Could your drink serve different purposes for different consumers? Explain.What is the normal physiological response to increased intake of sugars? to increased intake of caffeine?
When H2(g) reacts with C2H4(g) to form C2H6(g), 137 kJ of energy are evolved for each mole of H2(g) that reacts.
When a solution of Cu(II) chloride, CuCl2 , is added to a solution of potassium sulfide, K2S, a black precipitate of copper sulfide, CuS, forms. Write a balanced chemical equation, ionic equation, net ionic equation & spectator ions.
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