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Given the following reaction use Stoichiometry to answer the following questions:
4Fe (s) + 3 O2 (g) → 2 Fe2O3 (s) ?H° = -1.65 x 103 kJ
How many mol of O2 are required to form 3.20 mol Fe2O3?
How much heat is exchanged when 14.3 kg of iron (Fe) rusts?
How much (g) of rust, Fe2O3, is formed when 200. kJ of heat is released?
Calculate the standard change in enthalpy, ΔH°rxn, for the decomposition of calcium carbonate to calcium oxide: CaCO3 (s) → CaO (s) + CO2 (g)
Given that:
ΔH°f CaCO3 (s) = -1206.9 kJ/mol
ΔH° CaO )s) = -635.1 kJ/mol
ΔH° CO2 (g) = -393.5 kJ/mol.
a gas has a volume of 25 ml when its pressure .056 atm what will the volume of the gas be at the pressure of 1.00 ?
Explain the physical interactions of the molecules that lead to proteins falling out of solution in high salt. What is the driving force of protein precipitation?
Did an experiment williamson ether synthesis with sodium ethoxide and 1-bromobutane forming 1-ethoxybutane and NaBr. The 1H NMR showed an impurity
Calculate an unknown concentration of cobalt (II) nitrate if it and the original substance I was using both exhibit the color red? I'm pretty sure the answer is yes, but I want to double check.
A.) If 75.0 g of sodium is mixed with 40.0 g of nitrogen gas, what mass of sodium nitride forms? B.) If the reaction in part A has a percent yield of 90 % , how much sodium nitride is actually produced
Here is it, Bromine is less electronegative than chlorine, yet methyl bromide and methyl chloride have very similar dipole moments. Why
What is the change in total pressure within the chamber following the reaction? Assume a constant temperature throughout the process.
Calculate the mass (in mg) of KCN needed to make 500. mL of aqueous KCN solution with a pH of 10.00. The Ka of HCN = 5.0 x 10-10.
The osmotic pressure of a solution formed by dissolving 85.0 mg of aspirin (C9H8O4) in 0.250 L of water at 25 °C is __________ atm.
Consider the reaction with the rate law, Rate = k[BrO3-][Br-][H+]2 By what factor does the rate change if the concentration of BrO3- is doubled and that of Br- is doubled? Just put in the number as a whole number or fraction.
if 10.7 mL of .110 M NaOH is required to reach the equivalence point of a solution of citric acid, how many mL of NaOH are required to completely neutralized this solution
RNA Splicing- What is the minimum number of transesterification reactions needed to splice an intron from an mRNA transcript
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