Stearic acid (C18H3602) is a typical fatty acid, a molecule with a long hydrocarbon chain and anorganic acid group (COOH) at the end. It is used to make cosmetics, ointments, soaps, and candles andis found in animal tissue as part of many saturated fats. In fact, when you eat meat, chances are thatyou are ingesting some fats that contain stearic acid. Calculate the heat (q) in kJ and kcal when 9.03 g0of stearic acid is burned completely given that AH=-948 kJ/mol.fKJkcal

Step 1:To calculate the heat (q) released when 9.03g of stearic acid is burned completely, we need…

Answered: Stearic acid (C18H3602) is a typical…

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter4: Energy And Chemical Reactions

Section: Chapter Questions

Problem 120QRT

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Similar questions

The carbon dioxide exhaled in the breath of astronauts is often removed from the spacecraft by reaction with lithium hydroxide 2LiOH(s)+CO2(g)Li2CO3(s)+H2O(l) Estimate the grams of lithium hydroxide required per astronaut per day. Assume that each astronaut requires 2.50 103 kcal of energy per day. Further assume that this energy can be equated to the heat of combustion of a quantity of glucose, C6H12O6, to CO2(g) and H2O(l). From the amount of glucose required to give 2.50 103 kcal of heat, calculate the amount of CO2 produced and hence the amount of LiOH required. The H for glucose(s) is 1273 kJ/mol.
High fructose corn syrup (HFCS) is a sweetener that was designed in the 1970s, which takes corn starch and chemically modifies it to have a mixture of the constitutional isomers glucose and fructose (both of the formula C6H12O6). HFCS 55 is the type found in US sodas (like Coca Cola) and it contains 55.1% fructose molecules and 44.9% glucose molecules. Given that information, calculate how many molecules of fructose would be found in a can of coca cola if the amount of HFCS used were 67.5 g? Use the correct number of significant figures. *Input answer as: 6.022x10^23
8. A hydrocarbon fuel is fully combusted with 495.97 g of oxygen to yield 880.2 g of carbon dioxide and 396.34 g of water. A.) Find the empirical formula for the hydrocarbon. B.) The molecular formula of the hydrocarbon if its MW is 142.29 g/mol. 9. (5 points) The K, value of the reaction N₂O4 2NO₁₂ (g) ²(g) is 0.113. What is the Gibbs free energy, AG, of the reaction if the initial pressure of N₂O4 is 1.23 atm while NO₂ is 0.750 atm? Is the process spontaneous? 10. (5 points) The molar heat of vaporization of ammonia is 23.4 kJ/mol while its boiling point is -33.34 °C. Calculate the AS for the vaporization of 0.75 moles of ammonia. Express your answer with unit J/K.
You eat 160.0 g of glucose (a handful of M&M’s). If glucose, C6H12O6, reacts with oxygen gas to produce carbon dioxide and water, how many grams of carbon dioxide will you have to exhale?
* What amount (in mol) and what mass (in kg) of carbon dioxide are produced when 20 gallons (approximately 2.0 x 10' kg) of octane (C3H18) is combusted? C3H18(1) +O2(g) CO2(g) + H;O(1) A: 1.4 x 10°; 62
The fat stored in a camel’s hump is a source of both energy andwater. Calculate the mass of H2O produced by the metabolismof 1.0 kg of fat, assuming the fat consists entirely of tristearin1C57H110O62, a typical animal fat, and assuming that during metabolism,tristearin reacts with O2 to form only CO2 and H2O.
Explain your reasoning, please. Thank you.
High-density lipoprotein (HDL) cholesterol is the "good" cholesterol because adequate levels reduce the risk of heart disease and stroke. HDL levels between 40. and 59 mg/dL are typical for a healthy individual. What is this range of HDL cholesterol in units of mol/L? The formula for cholesterol is C27H46 O. Range of HDL cholesterol is between and mol/L.
Thank you!
2. An experiment to determine the carbon-sequestration capacity of a poui tree determined that in 1 year, the mature tree could remove 11,455 L (measured at room temperature and pressure) of carbon dioxide from the air, using the process in Q.1(d) to produce glucose. What mass of glucose would the poui tree have produced doing this?
As part of the aspirin synthesis lab the orgo students also had to perform the following calculation to demonstrate their knowledge. Are you able to help them work this out? Saponification is a process in which soap is produced from the chemical reaction between animal fat (triglycerides) and a strong base such as KOH. An example of such balanced chemical reaction is shown here: C51H98O6 + 3KOH → C3H5(OH)3 + 3C16H31O2K (Triglyceride) (Soap) if during the saponification reaction 231.5 g of C51H98O6 is mixed with 231.5 g of KOH and 160 g of soap is produced. Calculate the theoretical yield of soap C16H31O2K and indicate who is the limiting reactant. (Provide your answer to 2 decimal places) Calculate the percent yield for this reaction (Provide your answer to 1 decimal place) *Show ALL steps and mathematical equations involved in your calculations to help the orgo students. Remember to label all…
Balance the following chemical equation (ifnecessary):C6H6O(I) + O2(g) -> H20 (g) + CO2 (g)

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