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What volume of hydrogen gas can be produced by reacting 3.86 g of aluminum in excess of hydrochloric acid at 21 degrees Celsius and 102 kPa? The reaction is:2Al(s) + 6HCl(aq) arrrow 2AlCl3(aq) + 2H2(g)
change in heat content we write h hfinal - hinitial or for chemical reactions h hproducts - hreactants given this
Lindane is a toxic insecticide that causes dizziness and diarrhea in humans. Find the molecular formula for lindane given its percent composition:
the structure they gave me already has two nonbonding electrons on Bromine with no formal charge
The united states food and drug administration requires that any product called vinegar contain at least 4% of weight by acetic acid .Assuming that the density of vinegar is the same as water, does this satisfy the FDA requirement to be called vin..
When a 0.0200 mol sample of SO3 is introduced into an evacuated 1.67 L vessel at 900K, 0.0132 mol SO3 is found to be present at equilibrium. What is the value of Kp for the dissociation of SO3 at this temperature?
Explain how FeBr3 assists the reaction. Br2 dissolves in a number of solvents, but we preferentially use glacial acetic acid.
making it an excellent choice as a standard acid. What is the concentration of a NaOH solution, if it takes 62.00 mL to neutralize a 0.0778 g sample of the acid?
the energy is 18.44 kj/mol and for the methyl group in equatorial position the energy was 8.66 KJ/mol based on this information which is more stable and why?
53.8 percent nitrogen. At 25oC and 750 mm Hg, 1.05 g of this gas occupies a volume of 0.500 L. What is the molecular formula of the gas?
why are we given a known and unknown hydrate. what is the point of having a known sample. why is it important. do scientists give is a more 'generic' name, if so, what would a scientist call the known
A certain element consists of two stable isotopes. The first has atomic mass of 7.02 amu and a percent natural abundance of 92.6%.
suppose you wish to make a .879 L of .250 M silver nitrate by diluting a stool solution of .675 M silver nitrate. How many milliliters of silver nitrate do you need to use.
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