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Calculate the degrees of unsaturation in a compound with the molecular formula C3H6 and draw two possible structures for the formula.
How much of 2,4 hexadien-1-ol would you need to react with 98 mg of maleic anhydride in a Diels-Alder Reaction? (Assume a 1:1 molar ratio of maleic anhydride to 2,4 hexadien-1-ol)
Calculate the molality, molarity and mol fraction of a 25.4% (by mass) aqueous solution of phosphoric acid (H3PO4). in one litre of solution.
Hydrogen and oxygen react in a 1:8 mass ratio to form the compound H2O. Using the law of definite proportions, determine how many grams of hydrogen will react completely
How many grams of water can be cooled from 34°C to 26°C by the evaporation of 81 g of water? (The heat of vaporization of water in this temperature range is 2.4 kJ/g. The specific heat of water is 4.18 J/g·K.)
A rolling axle, 1.50 m long, is pushed along horizontal rails at a constant speed v=3.00 m/s. A resistor R=0.400Ω is connected to the rails at points a and b, directly opposite from each other.
The Reaction A->B+C is second order in A. When [A]0=0.100 M, the reaction is 20% complete in 53.7 minutes. calculate the value of the rate constant( in L/min mol)
A bottle of wine contains 14.5% ethanol by volume. The density of ethanol (C2H5OH) is 0.789 g/cm3. Calculate the concentration of ethanol in wine in terms of mass percent and molality.
Brominated biphenyls (PBB) is created through an electrophilic aromatic bromization out of the hydrocarbon biphenyl.
giving that water has a molar enthlphy of vaporization of 40.79 kJ/mol, how many grams of water could be vaporized by 623 J
If 3.93 g of sodium borohydride contains 2.5 × 10e23 H atoms, how many moles of H are present in 33 cm3 of sodium borohydride (of density 1.074 g/cm3)?
Consider the titration of 100.0 ml of .100M H2NNH2 by .200 M HNO3. Calculate the pH when the following volumes of HNO3 have been added
The water level in a graduated cylinder initially at 210 mL rises to 277 mL after a piece of lead is submerged. What is the mass in grams of the lead?
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