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Problem: The chlorides of the member metals are insoluble in aqueous and in dilute acid solutions, hence can be separated from other 4 groups by addition of HCl or NH4Cl:
Pb2+ + Cl- --> PbCl2 White
Hg+ + Cl- --> HgCl White
Ag+ + Cl- --> AgCl White
Required:
At room temperature 20 degrees Celsius, milk turns sour in about 64 hours. In a refrigerator (3 C), milk can be stored 3 times as long before it sours.
The enthalpy change for the reaction of hydrogen gas with flourine gas to produce hydrogen flouride is -542kJ fo the equation as written H2+F2=2HF deltaH=-542kJ
what function of acetic acid in rection to yield acetanilide? can it be changed to another
What is value of the activation energy, Ea, for this reaction. What is the value of the pre-exponential factor (sometimes called the frequency factor), A, for this reaction
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Which reaction intermediate is formed when 4-methylcyclohexene reacts with Br2 dissolved in CCl4?
Charge that would result on an atom by taking the number of valence electrons on the neutral atom and subtracting the nonbonding electrons
when do we use melting point depression method to determine molecular mass vs. other methods such as tiltration and quantitative precipitation
The purity of gold alloys is expressed in karats, which is the mass fraction of gold multiplied by 24. Pure gold is 24 kt, whereas 16 kt gold jewelry typically contains 66.666667% gold, 16.666667% silver and 16.666667% copper (by mass).
calculate the number of grams of xenon in 3.940 g of the compound xenon tetrafluoride. In grams please.
An infinite uniform sheet of charge can be thought of as consisting of an infinite number of adjacent uniformly charged rods. Using the fact that the electric.
At equilibrium, the concentration of [H2]= 0.6 M. What is the EQUILIBRIUM concentration for [H2],[I2]and [HI]? H2(g) + I2(g) 2 HI(g) [HI] =
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