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Solid sodium peroxide (Na202) reacts with liquid water yielding aqueous sodium hydroxide and oxygen gas. How much heat is released when 250.0 L of oxygen gas is produced from the reaction of sodium peroxide and water if the reaction is carried out in an open container at 1.000 atm pressure and 25 degrees Celsius?(Given: delta H of formation[Na2O2 (s)]= -510.9 kJ/mol ;delta H of formation[NaOH (aq)] = -469.2 kJ/ mol ;delta H of formation [H2O(l)] = -285.8 kJ/mol
Sorbic acid, C5H7COOH, is a weak monoprotic acid with Ka = 1.7 x 10-5. Calculate the pH of a solution containing 11.25 g of potassium sorbate in 1.75 L of solution.
Write complete and balanced net ionic equations for the reaction that occurs between the following pairs of reagents. If no reaction occurs, so state.
A compound has a molar absorptivity of 3.71*10^3 L cm^-1 mol^-1. What concentration of the compound would be required to produce a transmittance
Calculate the molar mass of naphthalene, the organic compound in mothballs, if a solution prepared by disovlving 7.50g of naphthalene in exactly 150g of benzene has a freazing point 2.0 degrees
if 25g of aluminum are allowed to react with 50.g of hydrochloric acid, how many grams of the product, aluminum chloride can be produced? equation.
a 13.6 sample of nh4no3 is dropped into a constant-pressure calorimeter containing 175 g of water at 23.5 c. what
the reduction of 9-fluorenone to 9-hydroxyfluorene by sodium borohydride. What is the limiting reagent in the following procedure?
sodium reacts with hydrogen gas. how many grams of sodium are needed to react with 2.50 l of hydrogen measured at stp?
The temperature of a sample of water increases from 21.9°C to 45.3°C as it absorbs 5669 J of heat. What is the mass of the sample.
What units do chemistry normally use for density of liquids and solids? for gas density? Explain the differences
Suppose that ammonia decomposes at 600 Kelvin to establish equilibrium NH3 1/2N2(g)+3/2H2 for which K=0.395. You have a box volume of 1.00 liter into which you inject 2.65 grams of NH3 at 600K. What will be the final concentrations of NH3,N2, and..
Calculate the pH that results when the following solutions are mixed: 6.8 mL of 0.500 M sodium acetate and 15.2 mL of 0.350 M acetic acid.
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