What is the ideal TLC R; for column chromatography application? Why is it advisable to run a TLC analysis prior to a column chromatographic separation? A student performed a TLC analysis and she observed that her sample was separated into 4 components. However, it is visible as a streak and not as small spot. How can she improve the experiment?

Q: Write the equilibrium constant expression, Kc, for the following reaction: If either the numerator o...

A: given,       MgCO3 (S) ⇔ Mg2+(aq) + CO32-aq) the equilibrium constant Kc expression is:

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Q: How many  molecules of oxygen (O2) are needed to produce 1.5  mol of NO by this reaction?

A: How many molecules of oxygen (O2) are needed to produce 1.5 mol of NO by this reaction?

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Q: equilibr Kp the following reaction. Enclose pressures in parentheses and do NOT write the chemical f...

A: Given : We have to write the equilibrium constant for the given reaction.

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A: The options are as follows:  

Q: The structural formula of benzene is often represented as a

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Q: Exercise 15 Date: 1 Study the following reactlons and write down, with a reason, whether the reactio...

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A: Answer of the question given below,

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Q: DRAW the decay scheme for 84Rb37.

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Q: A student removes 25 mL of 3.0 M NaOH and dilutes it to final volume of 350 mL. What is the concentr...

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A: Mass of resin = 4.56 g  Initial volume = 1 ml  Final volume = 1.7 ml  Density of resin = ?   

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Q: e concentration of M

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Q: What are periodic properties? Explain periodicity using an example from everyday life

A: Below attached file showing the details answer. All the best. 

Q: 3. Assign and label R/S configuration for all stereogenic centers and assign E/Z to all alkenes on t...

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Q: draw the skeleton structure of the following? Thank you very much! 1.) 3,4-dimethylcyclopentene 2....

A: Draw the skeleton structure of the following?

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A: stereogenic centers or chiral centers are the atoms which have four valencies different around them.

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Q: Calculate the ΔS°rxn of the following reaction at 223°C and standard pressure. =_____J/mol•K

A: The reaction given is,  

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Q: Ammonia is a convenient buffer system in the slightly basic range. (a) What is the pH of a buffer so...

A: Given, mass of NH4Cl=46 g moles of NH4Cl=46 g53.49 g/mol=0.8599 mol molarity of NH3=0.920 M Volume =...

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A: Given : We have to calculate K and delta G 

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Q: One mole of a weak acid, HA, was dissolved in 1.9 L of solution. After the system had come to equili...

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Q: Consider the following balanced chemical equation. 2 Al + 6 HCI 2 AICI, + 3 H, > How is the rate of ...

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Q: Can you answer the question?

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Q: . What is ΔHorxn of NH3 (ΔHof = -46 kJ/mol) + O2 = NO2 (ΔHorxn = 34) + H2O (ΔHorxn = -286)

A: Since you have posted multiple unrelated questions as per guidelines we can answer only one per sess...

Q: Give at least one example of each of the reactions below: a) neutralization, use an example from ev...

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