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How many Valence Electrons are there in Carbon?
how much heat is needed to convert 885 g of ice at -10degc to steam at 119degc? the specific heats of ice steam and
If a solution of HIn is adjusted to pH 6.23 contains a mixture of HIn and In- with a total concentration of 1.84x10-4M. The absorbance at 440nm is 0.868. Compute pKa
Problem- 1) How many kilograms of sulfur dioxide (a major source of acid rain) are produced from the burning of the coal in question 1, if the coal is 0.90% by mass sulfur
The normal freezing point of water H2O is 0.00 oC and its Kf value is 1.86 oC/m. Assuming complete dissociation of the electrolyte,
Trichloroacetic acid (CCl3CO2H) is a corrosive acid that is used to precipitate proteins. The pH of a 0.050 M solution of trichloroacetic acid is the same as the pH
If 40.0 g acetylene is allowed to react with 40.0 g oxygen, how many grams CO2 are formed.
question substances a and b are the same mass and at the same initial temperature. when they are heated the final
Potassium metal reacts with water to give potassium hydrozide and hydrogen gas. If 50.0 mL of hydrogen gas is produced at STP, what is the mass of potassium that reacted? 2 K9s) + 2H2O(1) -2KOH(aq) + H2(g)
what fraction of the band would be filled with electrons? Assume that all valence bands (5s, 4d, and 5p) overlap. Show your work and your resulting band diagram.
Calculate the change in the molar Gibbs energy of hydrogen gas when its pressure is increased isothermally
Question- List examples of three types of cations that is more stable than tertiary cations. Draw examples of each and explain why they are more stable than tertiary cations.
How does this technique error affect the molar concentration of the KIO3 solution. Will the reported molar concentration of the standardized Na2S2O3 solution be too high, too low, or unaffected
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