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Nitrogen monoxide, a gas recently found to be involved in a wide range of biological processes, reacts with oxygen to give brown NO2 gas.
2 NO(g) + O2(g) ? 2 NO2(g) ?rH° = -114.1 kJ/mol-rxn
Is this reaction endothermic or exothermic? What is the enthalpy change if 1.25 g of NO is converted completely to NO2?
What mass (in grams) of calcium carbonate is needed to react completely with 69mL of 0.12 M HCL according to the following equation. 2HCl(aq)+CaCO3(aq)-->CaCl2(aq)+H2O(l)+CO2(g)
What is the molarity of sodium chloride in solution that is 13% by mass sodium chloride and that has a density of 1.10g/mL
Consider a certain type of nucleus that has a rate constant of 2.92 s 10^-2min^-1. Calculate the time rquired for the sample to decay to one-fourth of its initial value.
Show how a buffer system will not drastically change its pH by addition of a certain amount of a strong acid or base. Use 0.50 M buffer system and show how the pH will change upon addition of 10.0 mL each of ) 0.10 M of HCl or NaOH. Use any combin..
A buffer is made by dissolving H3PO4 and NaH2PO4 in water. Write and equation that shows how this buffer neutralizes added bases.
Assuming that the drug components whose spots you identified dissolved completely when you stirred the tablet with 1:1 ethanol/dichloromethane, what was the solid that remained behind?
Derive the symmetries of the ligand σ orbitals for an octahedral complex. Draw the MO diagram for Cr(CO)6 showing σ bonding only.
If 10 mL of .004M AgNO3 is added to 10 mL of .0024M K2CrO4, is either Ag+ or CrO4 2- in stoichiometric excess. If so, which is in excess.
a certain second-order reaction has a rate constant of 1.75times10-3 at 27 and an initial half-life of 274 . what is
if air is composed of 21 oxygen and 79 nitrogen at 1 bar could be separated into its pure components each at 1 bar and
a solution of water kf1.86nbspand glucose freezes atnbspnbsp1.75c. what is the molal concentration of glucose in this
The half life for the first order decay of 99Mo is 66.02 hours. How long will it take for a sample of 99Mo to decay
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