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A) It takes 45.0J J to raise the temperature of an 9.90g g piece of unknown metal from 13.0 ? C to 24.4 ? C . What is the specific heat for the metal? Express your answer with the appropriate units. B) The molar heat capacity of silver is 25.35 J/mol * ? C How much energy would it take to raise the temperature of 9.90g g of silver by 11.6 ? C? Express your answer with the appropriate units.
A reaction is begun with a reaction mixture containing the following: [dye] = 1.0 x 10-4 M [bleach] = 0.10 M When [dye] = 8.0 x 10-5 M the rate is determined to be 3.74 x 10-7 M/min. When [dye] = 4.0 x 10-5 M the rate is determined to be 1.71 10-7..
2.00 x10^2 mL of .744 M HCl is mixed with 2.00 x 10^2 mL of .372 M Ba(OH)2. how many moles of water are produced in the reaction
What is the percent by mass of sulfur trioxide (SO3) if oleum is expressed as 3H2SO4 . 5SO3?
Consider the following overall reaction which is experimentally observed to be second order in AB and zero order in C: AB + C ----> A + BC Determine whether the mechanism below is valid for this reaction.
A 5.34 g sample of an aluminum alloy is reacted with hydrochloric acid to produce aluminum chloride and hydrogen gas. At a temperature of 298 Kelvin and a pressure of 1.03 atm, a volume of 1.53 L of hydrogen gas is collected.
Biocarbonate ion can react in water to produce hydroxide ions and carbonic acid according to the equation below.
A titration of sulfates in a 5.00 mL sample of drinking water with 10.0 mM (millimolar) of barium acetate as the titrant is carried out. A microflow pump was used instead of a buret
In HPLC, how often should I need to run standard with samples? Why? If the retention time is changed with real samples compared to standard
Two scientists are experimenting with pure samples of isotope X, a highly radioactive substance. The first scientist has a sample with a mass of 20 grams.
One method used to store energy during times of low demand is by pumping water uphill into a reservoir. When energy demand exceeds the output produced by power plants
An evaluation of R was performed, following the procedure. The barometric pressure was 736torr, the temperature was 295K, and the volume of hydrogen gas collected was 35.6mL. The calculated value of R was 82.1 atm K-1 mol-1. How many grams of magn..
Which of the following correctly lists the following isomeric alkanes in order of increasing boiling point? n-hexane, 2,3-dimethylbutane, 2-methylpentane
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