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Consider the following reaction at constant P. Use the information here to determine the value of ?Ssurr at 298 K. Predict whether or not this reaction will be spontaneous at this temperature.N2(g) + 2 O2(g) ? 2 NO2(g) ?H = +66.4 kJ
Calculate the density of a cube of unknown mental which weighs 38g and has a side of length 4cm.
Determine the mass of RbCN required to prepare a 500 mL solution which is .12 M RbCN (MW = 112 g/mol).
What is the product in the reaction between the aldehyde portion of a glucose molecule and the c-5 hydroxyl group? The possible answers
If the symbol X represents a central atom, Y represents outer atoms, and Z represents lone pairs on the central atom, the structure Y--X(with 2 lone pairs)--Y can be abbreviated as XY2Z2
how many mL of 1.00M NaOH should be added to .700 liter of 1.00M NaH2PO4? pKa = 6.82
Calculate a change in pH when 10 mL of 0.2 M LiOH is added to the buffer made by mixing 50mL of 0.1 M hydrobromous acid (HOBr) and 40 mL of 0.2 M of sodium hydrobromide
What is the absolute error in pKa according to pKa from the mid-point pH value? The true value is given in # (5) (9) What is the relative % error in pKa according to pKa from the mid-point pH value?
It takes 33 melt 3.51 joules to exactly 1 gram of H2O. What is the molar heat of fusion for water, from this data?
A patient needs to take 375 mg of ibuprofen twice daily. The pills in the bottle are each 250. rm mg. How many pills does the patient need to take each time she wants the 375 mg dosage? Assume that these pills are scored and can be cut in half if ..
When 2.00 mol of NOCl(g) was heated to 225 degrees celcius in a 400L steel reaction vessel, the NOCl partially decomposed according to the equation 2 NOCl(g) -->2 NO(g) + Cl2(g)
What is meant by a state of ‘dynamic equilibrium'? What happens to the concentration of reactants and products when a reaction reaches a state of dynamic equilibrium?
What is the standard change in Gibbs free energy of this reaction at 25 °C. Hint: The equilibrium constant is related to the change in Gibbs free energy
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