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The initial volume of a gas cylinder is 750.0 mL. If the pressure of a gas inside the cylinder changes from 840.0 mmhg to 360 mm hg , what is the final volume the gas occupies?
the problem does not specific a g value and supposedly can be solved. has to do with 12 reactions -- can you take
A chemist performed a titration experiment in order to determine the concentration of a given aqueous solution of HCl (an acid). She pipeted 20.00 mL of the HCl solution into an Erlenmeyer flask.
In an Fe and Cr voltaic cell where the Fe is in Fe(NO3)2 and the Cr is in Cr(NO3)3; calculate the cell potential at 25 C if the initial concentration in the half cells are as follows [Cr 3+] = 2.45M and [Fe 2+] = .75 M
Briefly explain which indicator, bromocresol purple (pKa = 6.3; from yellow to purple) or thymolphthalein (pKa= 10.0; from colourless to blue), would be better for use in this titration
How much limestone in kilograms is required to completely neutralize a 4.2×109L lake with a pH} of 5.6
The elementary steps for the formation of nitrogen and water from nitric oxide and hydrogen are given below. Identify any intermediates. 2 NO(g) ? N2O2(g) N2O2(g) + H2(g) ? N2O(g) + H2O(g) N2O(g) + H2(g) ? N2(g) + H2O(g)
A mixture of 82.49 g of aluminum ( Picture = 26.98 g/mol) and 117.65 g of oxygen ( Picture = 32.00 g/mol) is allowed to react. What mass of aluminum oxide ( Picture = 101.96 g/mol) can be formed?
What volume of gold would be equal in mass to a piece of copper with a volume of 140.0 mL? The density of gold is 19.3 g/mL; density of copper is 8.96 g/mL
a sculptor has prepared a mold for casting a bronze figure. the figure has a volume of 245 ml. if bronze has a density
Identify the two important classes of catalysts. Choose a catalyst that exists in the human body. Explain its importance and how it works.
Find an example of a natural product or drug that has been prepared using a Diels-Alder reaction. Show the complete synthesis of the drug.
For supercritical carbon dioxide, predict the effect that the following changes will have on the effect that the following changes will have on the elution time in an SFC experiment.
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