Homework Answers
10) Calculate the difference between the molar internal energy and the molar enthalpy for a perfect gas at 298.15K
For a perfect gas, we can use the formula:
H - U = RT
Where H is the molar enthalpy and U is the molar internal energy. R = 8.314 J/molK and T = 298.15K
We are looking for H - U, so just replace the values given above in the formula:
H - U = (8.314 J/molK)(298.15K)
H - U = 2478.8 J/mol
H - U = 2.479 kJ/mol
So, the correct answer is b) 2.4790 kJ/mol
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21C.1(a) The reaction of propylxanthate ion in acetic acid buffer solutions has the mechanism A− +H+→P....
21C.1(a) The reaction of propylxanthate ion in acetic acid buffer
solutions
has the mechanism A− +H+→P. Near 30 °C the rate constant is given
by the
empirical expression kr=(2.05×1013) e−(8681K)/T dm3mol−1 s−1.
Evaluate the
energy and entropy of activation at 30 °C.
21C.1(b) The reaction A− +H+→P has a rate constant given by the
empirical
expression kr=(6.92×1012)e−(5925K)/T dm3mol−1 s−1. Evaluate the
energy and
entropy of activation at 25 °C.
Please explain why they calculated H=E-RT like that
like why is...
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Please answer all the blanks (volume if H2 and everything in analysis). TIA! Data 5 1...
Please answer all the blanks (volume if H2 and
everything in analysis). TIA!
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What an Executive Summary Is An executive summary is a specific type of document that does...
What an Executive Summary Is
An executive summary is a specific type of document that does
two things: it summarizes a research article, and it offers
recommendations as to how information from the article can be
used.
Some long reports can contain an executive summary section, as
indicated in the Pearson handbook.
Write a 2 pahe Executive Summary
In business contexts, an executive summary is always written
for a specific purpose: to explain the information in the article
to a...
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1. According to the paper, what does lactate dehydrogenase
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points)
2. According to the paper, what is the major disadvantage of
relying on glycolysis during high-intensity exercise? (5
points)
3. Using Figure 1 in the paper, briefly describe the different
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21C.1(a) The reaction of propylxanthate ion in acetic acid buffer
solutions
has the mechanism A− +H+→P. Near 30 °C the rate constant is given
by the
empirical expression kr=(2.05×1013) e−(8681K)/T dm3mol−1 s−1.
Evaluate the
energy and entropy of activation at 30 °C.
21C.1(b) The reaction A− +H+→P has a rate constant given by the
empirical
expression kr=(6.92×1012)e−(5925K)/T dm3mol−1 s−1. Evaluate the
energy and
entropy of activation at 25 °C.
Please explain why they calculated H=E-RT like that
like why is...
4. Only ideal processes can be thermodynamically "reversible." Why can rear proce y can real processes not be? 5. Consider the following reactions. (Note: if this were an exam we would give you an excerpt on tabular data from Appendix 4 (Table A4.3). 2Fe(s) + 3Cla(s) 2FeCl(s) N2H4(8) + H2(g) + 2NH3(g) (a) Would you expect the entropy change for the above reaction to be >0, <0, or no (small)? Justify your answer. (d) Would you expect the entropy change...
Please answer all the blanks (volume if H2 and
everything in analysis). TIA!
Data 5 1 oong 0.00 10.5ml 2 o.olag 0.00 11.0 Trial 3 o.org 0.00 12.00 o Daag o.albg 0.00 10.0 ml 11.5ml Mass of Mg (g) Initial volume of Syringe (mL) Final volume of Syringe (mL) Volume of H (mL) Barometric pressure (torr) Ambient temperature (°C) Vapor pressure of H2O (torr) 779.314har 23. Oi 21.0 forr TA.314tar 23.0c 179.3 14ton 23.0¢ 779.314 ton 23.0c 779.31472 23.0c 21.0...
All of the following questions are in relation to the following journal article which is available on Moodle: Parr CL, Magnus MC, Karlstad O, Holvik K, Lund-Blix NA, Jaugen M, et al. Vitamin A and D intake in pregnancy, infant supplementation and asthma development: the Norwegian Mother and Child Cohort. Am J Clin Nutr 2018:107:789-798 QUESTIONS: 1. State one hypothesis the author's proposed in the manuscript. 2. There is previous research that shows that adequate Vitamin A intake is required...
What an Executive Summary Is
An executive summary is a specific type of document that does
two things: it summarizes a research article, and it offers
recommendations as to how information from the article can be
used.
Some long reports can contain an executive summary section, as
indicated in the Pearson handbook.
Write a 2 pahe Executive Summary
In business contexts, an executive summary is always written
for a specific purpose: to explain the information in the article
to a...
1. According to the paper, what does lactate dehydrogenase
(LDH) do and what does it allow to happen within the myofiber? (5
points)
2. According to the paper, what is the major disadvantage of
relying on glycolysis during high-intensity exercise? (5
points)
3. Using Figure 1 in the paper, briefly describe the different
sources of ATP production at 50% versus 90% AND explain whether you
believe this depiction of ATP production applies to a Type IIX
myofiber in a human....
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