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For the following reaction: ?NH?_4^+(aq) + ?NO?_2^-(aq) ? N2(g) + 2H2O(l) the rate law is: rate = k[?NH?_4^+ ] [?NO?_2^- ]^2 for an experiment, the initial rate is 0.03 mol L-1 s-1 when the initial concentrations are: [?NH?_4^+ ]_0 = 0.015 mol L-1 and [?NO?_2^- ]_0 = 0.02 mol L-1. What will be the initial rate (in mol L-1 s-1) when the initial concentrations are: [?NH?_4^+ ]_0 = 0.03 mol L-1 and [?NO?_2^- ]_0 = 0.04 mol L-1? A) 0.06 B) 0.12 C) 0.18 D) 0.24
Determine the molar absorptivity of the acidic form of bromocresol green at 445 nm and at 615 nm. Given: Stock soln of bromoscresol green= 80.0 mg/L Molar Mass= 698.0 g/mol ?(445nm)=A445/[BG]
Describe the role of the standard free energy change in bioenergetics. What specifically is meant by different levels of the standard free energy change'?
Draw line-bond structures for C3H6O, include all the constitutional isomers (except those with carbon-carbon double or triple bonds.) for each constitutional isomers
Give that 41.05mL of 0.551 M NaOH are needed to react completely with 5.343 g, sand-contaminated sample of benzoic acid (C6H5OOOH, a monoprotic acid,) answer the follwing questions.
Calculate kinetic energy of a 2 ton truck lumbering along at 60 mi/hr.
An adult female who weighs 164 pounds consumes on average 2470 Cal/day. If she wanted to lose 5.00 pounds in 293 days, what should her daily caloric intake
if all the ice cream calories were to be butned off how long would it take him? i got 45 minutes?
An aqueous solution is made by dissolving 24.5 grams of manganese(II) chloride in 466 grams of water.
Which element will have five electrons in its Lewis symbol? a. argon b. boron
Strontium metal crystallizes in a cubic unit cell which has an edge length of 612 pm. If the mass of an atom of Sr is 87.62 amu, and the density of Sr metal is 2.54 g/cm3.
A reaction has a first order rate constant of 4.31x10-5 s-1 at 25oC and 0.00111 s-1 at 65oC. What is the value of the rate constant at 43oC
50.50 mL of 0.116 M HF is titrated with 0.1200 M NaOH. How many mL of the base are required to reach the equivalence point? (Ka for HF is 6.8 x 10-4)
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