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For a particular process that is carried out at constant pressure, q= 130 kJ and w= -20 kJ. Therefore,
a)?E = 150 kJ and ? H= 130 kJ.b) ?E = 130 kJ and ? H= 150 kJ.c) ? E= 110 kJ and ? H= 130 kJ.d) ? E= 130 kJ and ? H= 110 kJ.
A chemistry student needs to weigh out exactly 1.19 mol of Mg(HCO3)2 to perform a laboratory experiment. How many grams should he weigh out?
A certain reaction has an enthalpy of change in H = 54 kJ and an activation energy of Ea=81 kJ. What is the activation energy of the reverse reaction
Consider the following first-order reaction: Reactant Product. This reaction has a half-life of 28.2 seconds. Calculate the rate constant.
The pKb values for the dibasic base B are pKb1 = 2.1 and pKb2 = 7.8. Calculate the pH at each of the following points in the titration of 50.0 mL of a 0.60 M B(aq) with 0.60 M HCl(aq).
how much heat is liberated in the reaction of 5.0g of Al and 20.0g of Fe2O3 producing extensively Fe and Al2O3
How much energy is dissipated as heat, which is exchanged btwn the system and the heat-sink?C. What is the delta U for the above process?
In Breckenridge, Colorado, the typical atmospheric pressure is 514 torr. What is the boiling point of water (ΔHvap = 40.7 kJ/mol) in Breckenridge?
How long does it take to deposit a coating of gold 1.00um thick on a disk-shaped medallion 4.00 cm in diameter and 2.00 mm thick at constant current of 89 A?
Hydrogen atoms that are bonded to an sp3 hybridized carbon atom normally appear between 0.9 & 1.8 ppm and are said to be shielded
What is the pressure (in atm) inside a container of gas connected to a mercury filled open-end manometer when the level in the arm connected to the container is 28.3cm higher than the level in the arm open to the atmosphere,
a) Subtract blank value (0.2 mV) from each measured signal. Make graph to find volume % of C2H2 in unknown b) Use method of least squares to find uncertainties in slope & intercept of your graph & estimate the uncertainty in answer to a.
Acid rain over the Great Lakes has a pH of about 4.5. Calculate the [H_3O^+] of this rain.
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