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A certain atom is bombarded with a neutron and changes into Lithium 7. What was that atom? (It is a fission reaction)
a. Nitrogen 14
b. lithium 7
c. beryllium 10
d. Boron 10
e. carbon 14
water's heat of fusion is 80 cal/g and is specific heat is 1.0 cal/g degree celcius. Some velmobile set have been designed to hold ice packs inside their cushions.
Calculate the number of sodium ions in (6.107x10^1) g sodium phosphate. 2. An aqueous solution of 10.0 grams of ammonium sulfide is mixed with an aqueous soluion of 10.0 grams of copper (II) chloride. What is the formula of the compound that precipit..
Assume that you have carried out a radical chlorination reaction on (R)-2- chloropentane and have isolated (in low yield) 2,4-dichloropentane.
what is steam distillation and why is it a preferred technique to purify high boiling liquids that are water-insoluble
calculate the equilibrium constant for the reaction. b. what is the chemical significance of the value of the equilibrium constant?
What volume of ammonia gas measured at 762 mm Hg and 21.0 °C must be absorbed by the same solution to neutralize the HCl?
The major product of the acid-catalyzed dehydration of heopentyl(2,2-dimethyl-1-propanol) has a different carbon skeleton than that of the starting alcohol
What would be the value of the change in concentration of C10H12/change in time during the same period of time? Explain why a catalyst for a forward reaction must also be a catalyst for the reverse reaction. Include an energy level diagram
A total of 2.00 mol of a compound is allowed to react with water in a foam coffee cup and the reaction produces 180g of solution. The reaction caused the temperature of the solution to rise from 21.0 to 24.7degrees Celsius
Calculate the grams of solute needed to prepare each of the following solution. 5.5L of a 0.60M KCI solution.
A solution has a volume of 2.0 L and contains 36.0 g of glucose (C6H12O6). If the molar mass of glucose is 180 g/mol, what is the molarity of the solution.
The normal melting point of benzene is 5.5 degrees Celsius . For the process of freezing, what is the sign for each of the following: a) Delta Hsys b) Delta Ssys c) Delta Gsys at 5.5 degrees Celsius d) Delta Gsys at 0 degrees Celsius
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