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2KMnO4(s) → K2MnO4(s) + MnO2(s) + O2(g)
If 2.50 L of O2(g) is needed at 1.00 atm and 20°C, what mass of KMnO4(s) should be decomposed? Assume the decomposition of KMnO4(s) goes to completion.
Two weights are tied to the ends of a wire as well as the wire is placed on a block of ice with the weights hanging down over the sides. Ultimately the wire passes through the block, however the block remains intact.
1. the equation for a beers law plot is y 2012.5x 0.003. if the recorded absorbance for an equilibrium mixture is
A mixture of Ar and N2 gases has a density of 1.592 g/L at STP. What is the mole fraction of each gas?
Compounds A and B elute from a chromatographic column after 14 and 18 minutes, respectively. The time required for the mobile phase to pass through the column is 5 minutes. Calculate the separation factor for substances A and B.
Problem- Glacial acetic acid is the concentrated form of acetic acid, the acid in vinegar. The term "glacial" refers to the appearance of the solid form, which resembles glacial ice. What is the melting point of this compound, in degrees Celsius, ..
A sample of h20 with a mass of 46.0 grams has a temperature of -58 degrees celcius. how many joules of energy are necessary to heat the steam from 100 degrees celsius to 114 degrees celcius.
Draw Lewis structures including nonbonding electrons on atom(s), if any) for HCN
a reaction of clacium phosphate and sulfuric acid results in calcium sulfate and phosphoric acid. if 250 grams of
calculate a value for the equilibrium constant for the reaction below. hint when reactions are added together the
silica gel columns having smaller particle size procedure more effective chromatographic separations
Practice Writing Expressions and Equations a rope is 21yds long. Marcos cut it into two pieces so that one piece is 3yrds. Shorter than the other
An ideal gas in a cylinder fitted with a piston expands at constant temperature from a pressure of 6 atm and a volume of 8.0 L to a final volume of 19 L against a constant opposing pressure of 5.2 atm. How much heat does the gas absorb, expressed ..
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