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Sodium peroxide (Na2O2) reacts with water to form sodium hydroxide and oxygen gas. Write a balanced equation for the reaction and determine how much oxygen in grams is formed by the complete reaction of 35.23g of Na2O2.
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What is the rate constant of a first-order reaction that takes 215 for the reactant concentration to drop to half of its initial value?
The element boron has two naturally occurring isotopes with masses of 10.0129 amu and 11.0093 amu. What is the percent abundance of the second isotope?
What minimum mass of succimer (C4H6O4S2) (in mg) is needed to bind all of the lead in a patient's bloodstream? Assume that patient blood lead levels are 25 micrograms/deciliter.
A certain second-order reaction has a rate constant of 1.10×10-3 at 27 C and an initial half-life of 226 . What is the concentration of the reactant after one half-life?
Na3AlF6(l) 3 Na(l) + Al(l) + 3 F2(g) What is the concentration of F2 over a bath of molten cryolite at this temperature? a) 3 10-35 M b) 5 10102 M c) 6 10-74 M d) 8 10-312 M e) 8 1017 M
what is the minimum amount of KCN (in g) needed to react with 15.6 g of gold?
"A student titrated a 10 mL sample of a saturated solution of borax. If the titration required 23.95 mL of 0.2556 M HCL to reach the endpoint, calculate the equilibrium molar concentration of B4O5(OH)(4 in the saturated solution"
Find the temperature and the pressure of a gas inside the cylinder - what was the initial pressure of the gas in the cylinder?
Calculate the heat of reaction for the same reaction where water is a gaseous product instead of a liquid.
the total pressure in the container is 3.70 atm . Calculate the partial pressure of each gas in the container
what is the actual amount of magnesium oxide produced when excess carbon dioxide reacts with 42.8 grams of magnesium metal?
How many ml of 0.05 M HCl solution would be required to completely neutralize 25.0 ml of 1.0 M Ba(OH)2 solution?
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