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Barium peroxide decomposes when heated to give BaO and O2. Write the balanced equation for this reaction. How many moles of O2 is formed when 0.500 mole of BaO2 is decomposed?
A certain quantity of a gas occupies 61.3 mL at 68C. If the pressure remains constant, what would the volume of the gas be at 17C?
What is the formula that relates the temperature change obsereved in a substance with the energy released or abosrbed? when you measure a temperature rise during a chemical reaction, is the reaction endothermic or exothermic?
During an experiment, a student adds 0.339 g of calcium metal to 100.0 mL of 2.05 M HCl. The student observes a temperature increase of 11.0 °C for the solution.
Calculate the concentration (molarity) of iron in a dilutedsolution if 5.00 mL of 5.0x10^-4 M Fe(NH4)2(SO4)2 6H2O isdiluted with water to 100.0 mL.
You need to produce a buffer solution that has a pH of 5.38. You already have a solution that contains 10. mmol (millimoles) of acetic acid.
Write a balanced molecular equation and a net ionic equation for the reaction aluminum hydroxide with a solution of hydrobromic acid. Include the states of each species. a) balanced molecular equation b) net ionic equation
Use resonance forms to show the delocalization (over four carbon atoms) of the negative charge of the benzyl and anion
The value of delta H for the decomposition of gaseous sulfur trioxide to its component elements, 2SO3 (g) ---> 2S (s, rhombic) + 3O2 (g) is _____ kj/mol.
Calculate P,V and T for initial and final states of each process and produce a plot of the two processes on a P,V diagram. Without resorting to equations, explain why the result for part (b) is greater than or less than the result for part (a).
Balance each of the half reactions in acidic solution a)Cu(s)>Cu^2+(aq) b)SO4^2-(aq)>SO3^2-(aq) c)BrO3^-(aq)>Br^-(aq) d)IO3^-(aq)>I2(s)
Combustion analysis of naphthalene, a hydrocarbon used in mothballs, produced 8.80 g CO2 and 1.44 g H2O. Calculate the empirical formula for naphthalene?
What are the likely ground-state electron configurations of the following anions? Se2-, N-3
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