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Utilizing bond energies, compute the enthalpy change for the burning of one mol of acetylene gas with excess oxygen gas yielding carbon dioxide gas as well as gaseous water (steam)
a. -822 kJ
b. -1222 kJ
c. -1484 kJ
d. -1643 kJ
e. -1862 kJ
What type of orgainc compound is responsible for the fruity flavorings found in many natural substances
What is the area of the circuit element in cm^2? Write your answer in scientific notation. Round your answer to 3significant digits.
You have a 1.23-mol sample of water at ?30.°C, and you heat it until you have gaseous water at 140.°C. Calculate q for the entire process. Use the following data.
Gaseous methane will react with gaseous oxygen to produce gaseous carbon dioxide and gaseous water . Suppose 0.48 g of methane is mixed with 1.13 g of oxygen. CH4+2O2 = CO2 + 2H2O
In a study of ammonia production, an industrial chemist discovers that the compound decomposes to its elements N2 and H2 in a first order process. She collects the following data
A voltaic cell consists of a standard H2 electrode in one half-cell and a Cu/Cu2+ half-cell. Calculate [Cu2+] when Ecell is 0.25 V
Calculate the pH at the equivalence point for the following titration: 0.10 M HCOOH versus 0.10 M NaOH.
How would the following experimental errors change the calculation of the number of mg of ascorbic acid in fresh orange juice, student neglected to filter the juice
The solubility of lead (II) iodide is 0.064 g/ 100 mL at 20 deg C. what is the solubility product for lead (II) iodide
If only 10ml of 3.0 M KOH were used in the alum preparation instead of the specified 25 ml,would KOH then become the limiting reactant? Write the chemical equation for the conversion of Al(s) to solid aluminum alum KAL(SO4)2*12H2O (S)
When might you want to do this. explain what we really are doing in this step and why it could not possibly be to salt-out the product at that point.
The final temperature of the calorimeter is 29.5 deg C. What is the specific heat capacity of the unknown metal. The specific heat capacity of water is 4.184J g^-1 degC^-1. Write answer in decimal form to two decimal places.
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