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Explain what initially forms as pale blue as well as pale precipitates when aqueous ammonia is added to [Cu(NH3)4]+2(aq) and [Ni(NH3)6]+2(aq) respectively?
a solution is prepared by dissolving 0.16 mol of acetic acid and 0.16 mol of ammonium chloride in enough water to make
a compound containing sulfur nitrogen and hydrogen has 86.6 sulfur 12.6 nitrogen and 0.91 hydrogen. a 1.263-g sample of
question what is the stoichiometric coefficient for oxygen gas when the following reaction is balanced using the
What is the formula weight of KI? What quantity of KI is present in 301 mL of a 0.30 M solution?
a 0.831-g sample of so3 is placed in a 1.00-l container and heated to 1100 k. the decomposes to so2 and o2
Find the pH of the equivalence point and the volume (mL) of 0.0746 M KOH needed to reach the equivalence point in the titration of 23.4 mL of 0.0390 M HNO2.
Suppose that the atomic mass unit (amu) had been defined as one-twelfth of the average mass of an atom of nitrogen instead of one-twelfth of the mass of an atom of carbon-12. What would the average atomic mass of potassium be on this new scale
Calculate w (in kJ) when 422 g iron (III) oxide (MM = 159.7 g/mol) reacts with excess carbon to produce carbon dioxide gas at 445 K:
use the cahn-ingold-prelog sequence rules to differentiate between e- epposite and z- zame zide olefins. differentiate
Assume that you have carried out a radical chlorination reaction on (R)-2- chloropentane and have isolated (in low yield) 2,4-dichloropentane.
A racemic product mixture is produced when (Z)-4-ethyl-4-octene is subjected to chlorohydrin formation conditions (Cl2, H2O). Draw both of the enantiomers that are formed.
The equilibrium constant for H2(g)+I2(g)->2HI at 40 oC is 20. The vapor [pressure of solid iodine at 40 oC is 0.1 bar. 12.7 g of solid iodine is placed in a 10 L vessel. What is the minimum amount of hydrogen that must be placed in the bulb to rem..
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