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Consider the reaction between Mercury Iodide (Hg2I2) and sulfur yielding mercury (HgS) sulfide and iodine (divalent molecule). Which element is reduced?
a. mercury
b. sulfur
c. iodine
d. hydrogen sulfide
e. hydrogen
In a combustion experiment, .73g of an unknown hydrocarbon was burned in the presence of excess oxygen. This reaction produced .452 g CO2 and .087 g H2O. How many moles of carbon were in the original hydrocarbon sample
a beaker of an acetic acid with 1.00times102ml buffer with a ph of 5.000 is sitting on a bench top. it is found that
Silver chloride crystallizes with the sodium chloride (rock salt) structure. The length of a unit cell edge is 555 pm. What is the density of AgCl? Show all works.
Calculate the energy necessary to boil 100.0 g carbon disulfide, CS2, at its normal boiling point.
If the dose of Na2CO3 is 100 mg/L , the volume of EDTA is 9.5 mL and the total hardness is 95 mg/L as CaCO3 calculate the % total hardness removed.
Write a mechanism for the formation of N-(2, 4-dinitrophenyl) aniline via nucleophilic aromatic substitution. Show all resonance forms that stabilize the intermediate in this reaction.
The first equivelence point is reached when 24.50 mL of base have been added. What is the molecular weight of the unknown acid?
Describe the technique you would use to determine the density of approximately 5 gram samples of the following at 20 degrees celcius and 1 atmosphere pressure:
what is the value for the standard internal energy of formation for acetyl chloride ch3cocl
at 25.0degc a sample of xe gas occupies 545 ml in a piston-cylider apparatus when the external pressure is 751 torr. at
[Mn(bipy)(N3)2] is a coordination complex with azide ion. What is the charge on the manganese. What is the overall charge on the complex. What is the name of this coordination complex.
1. what possible precipitate might form by mixing 50.0 ml of 1.010-4 m nacl with 50.0 ml of 1.010-6m agno3? will it
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