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Why is knowing the "mole ratio" essential when performing stoichiometric calculations? Your response must include (a) a discussion of balanced equations in the context of the law of conservation of mass and (b) an example different from the one in this lab that shows how a mole ratio is used in a stoichiometric calculation
The solubility of lanthanum iodate at a certain temperature is 9.55 x 10^-4. What is the Ksp of this compound at that temperature
Consider the following data and select the best buffer system below to make a buffer with a pH of 10.00.
determine what mass of h2 is formed when 35.6 grams of zinc metal is combined to an excess of dilute hcl?3 nog n2og
calculate the molality of this solution (in mol solute/kg solvent).
A blobfish usually experiences pressure of approximately 100 atm, when it is brought to the surface it experiences 1 atm of pressure and gets all blobby
Coniine, a toxic substance isolated from a poison hemlock, contains only carbon, hydrogen, and nitrogen. Combustion analysis if a 5.024mg sample yields 13.90mg of CO2 and 6.048mg of H2O. What is the empirical formula for Coniine
The Kb for an amine is 6.5x10-5. Explain what percentage of the amine are protons red if the pH of a solution of the amine is 9.725. Presume that all OH- came from the reaction of B with H2O)
Oxygen gas reacts with powdered aluminum according to the following reaction: 4Al(s) + 3O2 (g) = 2Al2O3(s). How many liters of O2 gas, measured at 779 mm Hg and 30 C, are required to completely react with 2.5 mol of Al?
Electrical energy can be used to separate water into oxygen gas and hydrogen gas. In one such experiment,
what is the formula used to determine the mass of KClO3 to form a saturated solution in 250g of water at 30 degrees celcius
An oxygen tank kept at 20.0?C contains 28.0 moles of oxygen and the gauge reads 31.0 atm. After two weeks, the gauge reads 20.7 atm. How much oxygen was used during the two-week period?
Calculate delta A of reaction and delta G of reaction for the reaction C6H6 (l) + 15/2 O2 (g) --> 6CO2 (g) + 3H2O (l) at 298 K from the combustion enthalpy of benzene and the entropies of the reactants and products.
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