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How much heat is absorbed in the complete reaction of 3.00 grams of SiO2 with excess carbon in the reaction below?SiO2(g) + 3 C(s) → SiC(s) + 2 CO(g) ?H for the reaction is +624.7 kJ/mol rxn
A saturated solution of Na2SO4 with excess of the solid is present in equilibrium with its vapor in a closed vessel. Calculate the number of degrees of freedom, f, of the system.
There are 2.2 mg of lead in exactly 500 g of a water sample. What would the concentration of lead be in parts per million.
Make a new solution with a total volume of 10.0 mL and How many moles are contained in 500.0 mL of solution
if 7.o moles of sulfur atoms and 10 moles of oxygen molecules are combined to form the maximum amount of sulfur trioxide, how many moles of which reactant remain unused at the end.
how many liters of H2 would be formed at 530 mm Hg and 15 degrees celcius if 20.5g of zinc was allowed to react?
The Lyman series in the hydrogen atom corresponds to transitions that originate from the n=1 level in absorption or that terminate in the n=1 level for emission. Calculate the energy, frequency, and wavelength of the least and most energetic transiti..
Calculate the molar solubility of bismuth sulfide, Bi2S3 (Ksp = 1.6 x 10-72) in (a) pure water, and (b) 0.05 M cadmium sulfide, CdS
Calculate the amount of energy released by the freezing of 13.3 g of a liquid substance, given that the substance has a molar mass of 82.9 g/mol and a molar heat of fusion of 4.60 kj/mol.
A volume of 80.0 mL of a 0.520 it M HNO_3 solution is titrated with 0.590 it M KOH. Calculate the volume of KOH required to reach the equivalence point?
Explain why the boiling point of an aqueous solution that is 1.0 m in glucose (C6H12O6) is 100.51oC whereas The boiling point of an aqueous solution that is 1.0 m in NaCl is 101.02 oC .
Find out the empirical formula also determine how many carbon,hydrogen, oxygen atoms are in there in this empirical formula?
octane has a density of 0.692g/ml at 20C. How many grams of O2 are required to burn 30.5 gal of C8H18
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