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The electron affinity of an atom of chlorine gas is -349 kJ/mol. If this energy is in the form ofelectromagnetic radiation, what is the frequency of the radiation? Is the radiation emitted orabsorbed?
A zero-order reaction has a constant rate of 1.00×10-4 . If after 80.0 seconds the concentration has dropped to 6.50×10-2 , what was the initial concentration.
The element bromine was first prepared by oxidation of aqueous potassium bromide with solid manganese(IV) oxide. Write a balanced net ionic equation for the reaction in aqueous acidic solution
An ethylene glycol solution contains 21.2 g of ethylene glycol in 85.4 ml of water. Compute the freezing point and boiling point of the solution. (Assume a density of 1.00 g/mL for water)
Explain clearly the properties of agood freezing agent basing the explanation vant hoffs factor and on colligative property.
In the preparation of amides, acid chlorides or anhydrides may be used to react with the selected amine. It is known that acid chlorides are more reactive than the corresponding anhydrides in this type of nucleophilic acyl substitution reaction.
Use the dipole moments of and ( HCl= 1.08, Hf= 1.82) together with the percent ionic character of each bond ( HCl= 20% ionic, HF= 45% ionic) to estimate the bond length in each molecule.
A sample of silver chromate (Ag2CrO4) has a mass of 24.7 g. (a) How many Ag+ ions are present? ions (b) How many CrO42- ions are present? ions (c) What is the mass in grams of one formula unit of silver chromate? g/formula unit
dissolved in water and completely neutralized by the addition of 43.70 mL of 0.303 M NaOH. Calculate the molar mass of the acid, assuming it to be a monoprotic acid.
calculate the number of moles of magnetic iron oxide produced.
What is the pressure of the gas in this mercury manometer if h = 73 mm and atmospheric pressure
An ionic solution is investigated for identity. Using the following clues, identify the cation and the anion in the solution: a. There is only one cation and one anion in the solution
An alkyne of six carbon atoms gives the same single product in its reaction either with BH3 in THF followed by H2O2 /OH-, or with H2O/Hg2
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