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Chemistry Questions and Answers January 09, 2020

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Calculate the compressibility factor for real gas O2 at P 50.1 atm, and the molar volume of oxygen Vm 78.2 L mol. 3D

The decomposition of nitramide, ONNH, in water has the chemical equation and rate law ONNH(aq) NO(g) HO(1) ONNH H A proposed mechanism for this reaction is 1. ONNH (aq) k rate k k ONNH(aq) H (aq) (fast equilibrium) k1 k 2. ONNH(aq) 3. H (aq) OH(aq) HO(1) (fast) What is the relationship between the observed value of k and the rate
The decomposition of nitramide, O,NNH,, in water has the chemical equation and rate law O,NNH2] H+1 ONNH, (aq)-N20(g) + H20(1

Acetanilide dissolves well in cool water. If you were given a mixture of sugar, charcoal and acetanilide, explain with steps, how you are going to isolate individual components.

Calculate the standard entropy change for the reaction at 25 C. Standard molar entropy values can be found in this. C,H,(g) 50,(g) 3 CO,(g) 4 H,0(g) ASixn JK

Why water is the ideal solvent for the recrystallization of benzoic acid

Crystallization can be induced by scratching the flask with a glass rod. How does scratching the flask induce crystallization

To which of the compounds below does the NMR spectrum shown below belong Explain your answer carefully. (1) cis3hexene (2) (Z)1ethoxy1butene (3) 2ethyl1butene (4) ClCHCHCI (5) Cl,CHCH(OCH,CH,), 6CH,CH, CH,CHO 500 HO Hz 400 300 200 100 08, ppm 1. 3 H,

Sketch the radial distribution functions for the 2p, 3p, and 3d orbitals and, with reference to your diagrams, explain why a 3p orbital is lower in energy than a 3d orbital.

An unknown compound exhibits a mass spectrum with mz 100 ( 2, M), 71 (15), 58 (90), 43 (100), and 29 (20). The IR spectrum shows peaks at 2963 cm (strong), 2711 cm (medium), and 1727 cm (strong). What is the structure of the compound O b)
An unknown compound exhlbits a mass spectrum with m/z - 100 (29%, M 71 (15%), 58(90%) 43 (100%), and29 (20%). The IR spectrum

A certain compound is 30.06 oxygen by mass and the rest is iron. How many kilograms of the compound are needed in order to obtain 35 kg of iron

The boiling point of ammonia, NH3, is 33.4C and that of sulfur dioxide, SO2, is 10.0C. Which has the higher vapor pressure at 40C

The following liquidphase reactions were carried out in a CSTR at 325 K. kLA 7.0 min BC k0 3.0 dm molmin 2CA 3D dm mol min 4D3C 3E kE 2.0 ,The concentrations measured inside the reactor were CA 0.10, CB 0.93, CC 0.51 , and CD 0.049 all in moldm3. 3D (a) What are 1A, 12A, and 13A (1A 0.7 moldm3 min) (b) What are 1B , 2B , and r3B (c)

Give the product of the following reaction. Br Nal Acetone Br

List the following alkenes in order of increasing heats of hydrogenation

A scientist measures the standard enthalpy change for the following reaction to be 8.1 kJ 2CO(g) 5 H(g) CH(g) 4HO(g) Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of formation of HO(g) is kJmol.
A scientist measures the standard enthalpy change for the following reaction to be 8.1 kJ: 2CO2(g)5 H2(g)C2H2(g) +4H20(g) Bas

A scientist measures the standard enthalpy change for the following reaction to be 25.2 kJ 1(g) Cl(g) 2ICI(g) Based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of formation of ICI(g) is kJmol.
A scientist measures the standard enthalpy change for the following reaction to be -25.2 kJ I2(g)Cl2(g)2ICI(g) + Based on th