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Samuel Williams

Samuel W.

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A commercial process for preparing ethanol (ethyl alcohol), $\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH},$ consists of passing ethylene gas, $\mathrm{C}_{2} \mathrm{H}_{4},$ and steam over an acid catalyst (to speed up the reaction). The gas-phase reaction is Use bond enthalpies (Table 9.5 ) to estimate the enthalpy change for this reaction when $37.0 \mathrm{~g}$ of ethyl alcohol is produced.

A commercial process for preparing ethanol (ethyl alcohol), $\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH},$ consists of passing ethylene gas, $\mathrm{C}_{2} \mathrm{H}_{4},$ and steam over an acid catalyst (to speed up the reaction). The gas-phase reaction is Use bond enthalpies (Table 9.5 ) to estimate the enthalpy change for this reaction when $37.0 \mathrm{~g}$ of ethyl alcohol is produced.

General Chemistry

Questions asked

INSTANT ANSWER

a) Express (5x - 7)/(x ^ 2 - 2x - 3) * i partial fractions.

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INSTANT ANSWER

2. How would you prepare 500 mL of Sucrose-Tris-EDTA buffer, pH 7.4( 0.25M Sucrose, 10 mM Tris and 0.5 mM EDTA)

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2. How would you prepare 50 mL of 0.1% N-naphthyl-ethylenediamine solution.

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Stephen Pulliam verified

Numerade educator

Use Henderson-Hasselbalch equation, calculate the mole ratio of potassium phosphate buffer

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Stephen Pulliam verified

Numerade educator

Using Henderson-Hasselbalch equation, calculate the pH of potassium phosphate buffer

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How would you prepare 500 mL of 0.05 M potassium phosphate buffer, pH 7.5.

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Luke Humphrey verified

Numerade educator

How would you prepare 3 L of Saline solution.

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INSTANT ANSWER

Autosomal dominant means?

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Kaela Piechowicz verified

Numerade educator

1b. The figure below represents the inheritance of a diseased condition. Use it to answer the questions that follow. (i). What is the most likely inheritance pattern for the trait? (1 mark) (ii). Justify your answer with TWO reasons (2 marks)

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Describe the structure and functions of the tissue system of parenchyma, collenchyma, and sclerenchyma.

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