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1. How many components are there in a system composed of arbitrary amounts of water, sodium chloride, and barium chloride?
2. At high temperature, the following reactions take place:
C + CO22CO
and CO2 + H2 CO + H2O
How many components are there if we start with:(a) Arbitrary amounts of C, CO2, and H2?
(b) Arbitrary amounts of C, CO2, H2, CO, and H2O?
The pKa of one of the hydrogens that is attached to one of the nitrogens of the purine guanine is 9.7. If guanine is in a solution that has a pH of 10.2, then what fraction of the guanine molecules would be in the protonated form at this pH?
In the molecular orbital model of benzene, the six p-orbitals combine to form how many molecular orbitals
Calcium nitrate are mixed with 15.0 mL of 0.300 M potassium hydroxide, how many moles of calcium hydroxide will be expected to be made?
At 25 degrees the rate constant for the first order decomposition of a solution is .00640. If the starting concentration is .0314M, what will concentration will remain after 62.0 min at 25 degrees
the shark tank at an aquarium houses 5 sharks that deplete theaquarium water of a total of 50.00 grams of oxygen per
To stop a gas leak from gas well the gas was deliberately set on fire until leak could be stopped... What pollutant species were produced by the fire besides CO2
The human eye is able to detect as little as 2.35 × 10-18 J of green light of wavelength 510 nm. Calculate the minimum number of photons of green light that can be detected by the human eye. Physical constants can be found here.
The sucrose is being converted to other sugars in a reaction which is first-order with respect to the sucrose concentration. Exactly 30 minutes later, the sucrose concentration has fallen to 0.131 mol/L. Calculate the value of the rate constant in..
a sample containing 1.50 moles of neon gas has a volume of 8.00 liters. what is the new volume if 25.0g of neon is added.
Draw a lewis dot structure for ketoisophorone to figure out how many non bonding pairs of electrons there are in the molecule.
2. Which of the following atoms has the highest first ionization energy? (1) Na (2) K (3) Sc (4) Rb 3. In the Hofmann bromamide degradation reaction, the number of moles of NaOH and 2 Br used per mole of amine produced are:
In the presence of excess thiocyanate ion, SCN-, the following reaction is first order in chromium (III) ion, Cr3+; the rate constant is 2.0 x 10-6/s.
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