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3NaHCO3 + H3C6H5O7 > 3CO2 + 3H2O + NaC6H5O7, Find out the percent yield of Na3C6H5O7 if 2.50 g are produced.
a 25.00-ml sample of an unknown h3po4 solution is titrated with a 0.100 m naoh solution. the equivalence point is
how many moles are there of the reducing agent. What is the molarity of the reducing agent? Oxidizing agent --> KMnO4 Reducing Agent --> Fe +2 Volume of Fe +2 = 25 mL Concentration of KMnO4 = 0.1290 M
Solve for the temperature if there are 1.231 L of 0.5387 moles of nitrogen at a pressure of 731.2 mm Hg.
Consider the reaction that describes the Haber process for the production of ammonia: for which Kc at 300oC is 9.5. Calculate Kp for this reaction at 300oC.
copper-64 is used to study brain tumors. assume that the original mass of a sample of copper-64 is 26.00g. After 64 hours, all that remains is 0.8125g of copper-64. What is the half-life of this radioactive isotope?
A 25.0-ml sample of potassium chloride solution was found to have a mass of 25.115 g. When the solution was heated to dryness, the mass of the solute residue was 0.252 g. Calculate the mass/mass percentage concentration and molar concentration.
consider the following reaction representing the combustion of propanec3h8 o2 -gtco2 h2oa. balance the equationb. how
when 2.74 g of Ba(s) reacts with O2(g) at 298 K and 1 atm to form BaO(s), 11,100 J of heat is released. what is the delta H of formation for BaO(s) in kJ/mol?
Fully explain why this series of reaction will produce the 3,5-dibromotoluene and direct bromination of toluene produces the 2,4-dibromotoluene.
Draw the Lewis structure and structural formulas for CCl3F. Sketch the spacefiling model and the charge-density model for this molecule.
How many mL of 5.0 M NaOH can be added before its buffering capacity is exhausted?
A 1.080 g sample of a new organic substance is combusted in the same calorimeter. The temperature of the calorimeter increases from 22.14°C to 26.82°C. What is the heat of combustion per gram of the new substance
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