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How many moles of carbon dioxide can be produced if one tablet containing 0.0119 mol Sodium Bicarbonate is dissolved NaHCO_3 + H_3C_6H_5O_7 3 CO_2 + 3 H_2O + Na_3C_6H_5O_7
A mixture of gases contains 2.42 g of Kr, 4.58 g of Ar, and 5.74 g of NO2. What is the partial pressure in atm of each component of this mixture if it is held in a 11.5-L vessel at 31.3 oC? Use R = 0.0821 L-atm/mol-K as the value of the gas consta..
How many grams of NaN3 are required to produce 340 L of nitrogen gas if the gas has a density of 1.25 g/L?
A lactic acid/lactate ion buffer solution contains 0.44M HC3H5O3 and 0.90 M C3H5O3^-, respectively. The K a value of lactic acid is 1.4times 10^-4. Calculate the pH of this buffer.
Calculate the [Zn2+] in a solution of ZnC2O4 held at a pH of 3.00. Remember C2O4^2- is a weak base so you must consider other equilibria.
The solubility product of Mg(OH)2 is 1.2E-11. What minimum OH- concentration must be attained (for example, by adding NaOH) to decrease the Mg2+ concentration in a solution of Mg(NO3)2 to less than 1.9E-10 M?
how do you find the empirical formula of a compound if they don't give you percentages. For example, if they ask: what is the empirical formula for N2O4?
What is the molarity of a solution formed by mixing 20.0 g sulfuric acid with enough water to make 500.0 mL of solution?
Calculate the experimental percent by mass of copper in the sample and the theoretical mass percent of copper in copper (II) acetate monohydrate.
The following reaction is spontaneous only below 3000 K. What conclusions can be drawn regarding this reaction? A + B ® AB
The major isotopes of tungsten are 182W(26.32 %), 183W(14.31%0, 184W(30.67%), and 186W(28.62%) What is the atomic weight of W?
In a combustion reaction 4 moles of C8H18 react with 8 moles of O2. If the actual yield of CO2 produced is 28.16 grams, what is the percent yield?
A phase change occurs at 298 K and deltaS system - -13.5 J/K. What is the change in the entropy of the surroundings?
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