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Explain what the theoretical yield of aluminum oxide is if 2.80 mol of aluminum metal is exposed to 2.40 mol of oxygen
Calculate the hydronium ion concentration and the pH after the addition of 0.25 mL of 0.10 M HCl to each one. What accounts for the difference in the hydronium ion concentrations
The zinc in a 1.274g sample of foot powder was precipiated as ZnNH4PO4. Strong heating of the precipiate yielded 0.4089g Zn2P2O7. Calculate the mass percent of zinc in the sample of foot powder.
Predict whether a reaction will occur in each of the following. if so write the balanced chemical equation as well as the net ionic equation. Phases are all required for all species.
Calculate the time in hours which would have been required for 99.9% of the t-butyl chloride to hydrolyze, if the reactant had been allowed to proceed without the addition of extra water or heating.
A student mixes 50 ml of 1.00M H2SO4 react with 100. ml (1 x 10^2 ml) of 1.00M NaOH in a calorimeter. The temperature of both solutions initially at 22.85 deg Celsius changes to 28.86 deg Celsius.
helium-oxygen mixtures are used by divers to avoid the bendsand are used in medicine to treat some respiratory
Explain how real gases differ from ideal gases. At what conditions do the variations become the biggest. At room conditions, if you know the condensation point for a series of gases, how will that allow you to predict which gases would vary most f..
Chromium metal can be plated from an acidic solution of CrO3. CrO3(aq) + 6H+(aq) + 6e- Cr(s) + 3H2O How many grams of chromium will be plated by the passage of 19,300 C (coulombs).
when 24 copper pennies are submerged in water the pennies displace 8.26 cm3 of water. if the combined mass of the
Phosphorylation of a serine residue on the dual function enzyme PFK2/FBP2 switches it from a kinase active, phosphatase inactive form to a kinase inactive, phosphatase active form
if 2.29 moles of argon gas are added to 3.5L of a 6.58 mole sample of argon gas what is the final volume
calculate the amount of energy as heat by the freezing of 13.3 g of a liquid substance. given that the substance has a molar mass of 82.9g/mol and a molar enthalpy of fusion of 4.60 kj/mol.
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