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Calculate the number of water molecules that can be prepared from 664 H2 molecules and 664 O2 molecules.
Mathematically determine which acid contributes a larger concentration of H3O+ ions into the solution, be sure to report the H3O+ concentrations for both, label them clearly, and identify which substance creates a larger concentration?
Predict whether the entropy change is positive or negative for each of the following reactions. Give reasons for your predictions.
the maximum velocity of the ejected electrons is 3.45 multiplied by 105 m/s. Calculate the binding energy of electrons to the magnesium surface.
Determine how many grams of the following solutes would be needed to make 550 mL of a 0.700 M solution.
Humans unaccustomed to high altitudes tend to breathe much more rapidly (at least initially) because the partial pressure of O2(g) in air is much lower compared with that at low altitudes
A benzylic carbocation is generated under the conditions of part A. would the presence of a para CH3O- group on the benzene ring
When the same flask is filled with concentrated sulfuric acid, H2SO4, its mass is 1026.57 g. What is the density of concentrated sulfuric acid. Assume water has a density of 1.00 g/cm3 at the temperature of the measurement.
It is possible to write four resonance structures for the azide ion, N3-, all of which satisfy the octet rule (write them all). However, experiential evidence shows that the azide ion has linear shape, with equal nitrogen-nitrogen distances
Calculate the work in Joules when 2.5 mols of water vaporizes at 1 atmosphere pressure and 25 degrees C. The work is done in pushing back the atmosphere.
A sample of an ideal gas at 1.00 atm and a volume of 1.38 L was placed in a weighted balloon and dropped into the ocean. As the sample descended, the water pressure compressed the balloon and reduced its volume.
what will be the heat capacity in units of jk of a constant pressure coffee-cup calorimter that contains 100.0 ml of
how much NaCl is present in one serving (105g ) of chips? Express your answer to three significant figures and include the appropriate units. (in grams)
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