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Alpha-linolenic acid is one of a large group of fatty acids that are found in fish oil, walnuts and canola seeds. These nutrients are essential for good health. All of these fatty acids consist of an unsaturated hydrocarbon that is terminated by a carboxylic acid functional group. When a 14.8154 g sample of unknown fatty acid is burned in oxygen, the process consumes 32 g of O2. The reaction produces 39.609 g of CO2 and 7.2064 g of H2O. Based on these results and the molar masses of H (1.008 g), C (12.01 g) and O (16.00 g), how many hydrogen atoms are in each formula unit of the acid, CxHyO2?
Nickel oxide crystallizes in the NaCl type of cystal structure. The length of an edge of the unit cell of NiO is 4.18A. What is the NiO bond length?
A 14.824g rock is placed in a graduated cylinder containing 45.8mL of water. Calculate the density of the rock if the water level rises to 55.2mL.
In a titration of HNO3, you add a few drops of phenolphthalein indicator to 50.00 mL of acid in a flask. You quickly add 23.75 mL of 0.0502 M NaOH but overshoot the end point
How many grams of ethylene glycol would be needed to prevent 4kg of water from freezing above -5.0 degress C
Suppose that the microwave radiation has a wavelength of 12.4cm . How many photons are required to heat 275mL of coffee from 25.0 ?C to 62.0 ?C?
The freezing-point depression measurement of benzoic acid in acetone yields a molar mass of 122 g; the same measurement in benzene gives a value of 242 g
It is also noted that NO3 is a reaction intermediate. Suggest a plausible reaction mechanism
A certain amount of glucose, C6H12O6 burned in oxygen, and produced 22 grams of carbon dioxide, CO2. How many grams of water was produced at the same time?
a cell depositing Cu from a Cu2+ bath operates for 10 hours with an average current of 5.8 A. if 65.3 g of copper is deposited, at what efficiency is the cell operating?
Crystalline solids are well-ordered arrays of atoms or molecules. Crystalline solids may be metallic solids, molecular solids, or ionic solids.
The density of a liquid sulfur compound is 1.14 gmL1. This compound contains 23.7% sulfur. How many milliliters of the compound must be burned to obtain 6.40 g of SO2? Molar Mass SO2 64.1 gmol
sample of ideal gas be compressed at constant temperature for delta s system to be -3.4j/k
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