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When a 7.00g sample of KCN is diisolved in water in a calorimeter that has a total heat capacity of 5.989 KJ K^-1, the temperature decreases by 0.2010 K. Calculate the molar heat of solution of KCN.
at 400 K, the rate of decomposition of a gaseous compound initially at a pressure of 12.6 kPa, was 9.71 Pa/s when 10.0 % had reacted and 7.67 Pa when 20.0 % had reacted.Determine the order of reaction.
how many kilocalories are needed to heat the 1700kg of water from 56 degrees fahrenheit to 167 degrees fahrenheit?
A cube of Al is needed to have the mass of 93.5. What must be the length of the cube's edge in cm?
Calculate the standard reduction potential for the reaction for the reaction Cu(III) to Cu(II).
If you take a 67.5 mL portion of 1.98 M. NH3 stock solution and dilute it to a total volume of 0.600 L, what will the concentration of the final solution be?
How many grams of water can be cooled from 36 degrees celsius to 23 degrees celsius by the evaporation of 53g of water.
Batting averages of baseball players are reported in parts per thousand. what would be the batting average of a hitter
linear polystyrene has phenyl groups that are attached to alternate not adjacent carbons of the polymer chain
An unknown gas X effuses 1.65 times faster than C3H8. What is the molecular mass of gas X?
A 1004.0 g sample of calcium carbonate that is 95% pure gives 225 L of carbon dioxide at STP when reacted with an excess of hydrochloric acid. What is the density in g/L of the carbon dioxide?
What is the maximum amount of aluminum sulfate that can be formed?
What mass of sodium chloride, NaCl, is needed to make 389. g of a 3.89%(m/m) NaCl solution? (atomic masses: Na = 22.99, Cl = 35.45)
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