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A 15 gram piece of iron is heated to a temperature of 47.0 ?C and then placed in contact with a 275 g piece of copper at 20.0 ?C (Cp = 25.46 J/mol-?C). What was the final temperature of the two pieces of metal?
A certain protein was found to contain 0.412% manganese by mass. Determine the minimum molecular mass of the protein.
2-methyl-2-butene and 2-methyl-1-butene with Br2 in CH2Cl2
What is the rate of reaction of O2? What is the rate of formation of N2O5?
How many moles are present of an ideal gas at the following conditions: 1.0 atm, 25.00C
How many grams of aluminum oxide are produced when 50.3g aluminum react, When 0.510 mole aluminum is reacted in a closed container with 7.90g oxygen, how many grams of aluminum oxide can form?
what is the total mass in grams of a series of samples that have masses of 753mg,
a fuel oil is composed of C10H22 and C12H26 when the fuel oil ios burned with 20% excess air the ratio of water to CO2 is found to be 1.088.
A 20.94 g sample of an unknown metal is heated to 99.4 C in a hot water bath. The metal is quickly transferred to 100ml of water at 22.0 C in a coffee cup calorimeter.
Draw the structure of a compound c5h8o that reacts with phenyl-hydrazine, decolorizes bromine in dichlorometh, and does not give a positive iodoform test
A compound contains atoms of three elements X, Y and Z.The oxidation numbers are X +2, Y +5 & Z -2.formula ? How can we formulate formula of a ternary compound using their valency?
Calculate the solubility product constant for Pb(IO3)2 (4.3 x 10^-5 M), given that the molar concentration of saturated solution is as indicated in parenthesis.
When solutions containing silver and chloride ions are mixed, silver chloride precipitates: Ag+ (aq) plus Cl- (aq) ---> AgCl(s)
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