Quantity of energy
For the reaction below ?H = -296 kJ per mole of SO2 formed.
S(s) + O2(g) ? SO2(g)
What quantity of energy is required to break up exactly 6 mol of SO2(g) into its constituent elements?
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A 27.3 g sample of pure iron at 81 C is dropped into 56 g of water at 40 C. What is the final temperature of the water-iron mixture?
For the reaction A → 2B, the reaction rate is equal to its rate constant of 0.447mol L-1min-1. Your value for [A]o= 0.50 M, what is the half-life of the reaction?
A company has fixed costs of $75,250. Its contribution margin ratio is 35% and the product sells for $71 per unit. What is the company's break-even point in dollar sales?
Prepare journal entries to record these transactions and adjustments for 2010 and 2011.How much warranty expense is reported for November 2010 and for December 2010?
What mass of P4(s) is required to completely consume 25L of H2(g) at 27 degrees Celcius and 0.976 atm in the presence of excess oxygen. Molar mass of P4 given at 123.88 g/mol. Molar mass of H2 given 2.02 g/mol.
Calculate the work done when the gas expands isothermically against a constant external pressure of 210 Torr until it's volume has increased by 3.5L, then calculate the work done if the expansion occurred reversibly.
The molar heat of fusion of aluminum metal is 10.79 kJ/mol, whereas its heat of vaporization is 293.4 kJ/mol. What quantity of heat would be required to vaporize 1.52 g of aluminum at its normal boiling point?
A June sales forecast projects that 7,500 units are going to be sold at a price of $12.00 per unit. The desired ending inventory of units is 15% higher than the beginning inventory of 2,500 units. Total June sales are anticipated to be?
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