The mass of hydrogen in grams that could be obtained from 1.0 kg of ethanol, C 2 H 5 OH should be determined. Concept introduction: To obtain a mass of specific elementfrom the given mass of a compound, first convert the given mass of a compound into their corresponding moles usingmolar mass of a compound as a conversion factor. Then, use thesemoles as a conversion factor to convert the moles of a compound into the moles of specific elements present in the compound using mole–mole relationship. Convert the moles of elements into corresponding mass using molar mass of the element as a conversion factor.
The mass of hydrogen in grams that could be obtained from 1.0 kg of ethanol, C 2 H 5 OH should be determined. Concept introduction: To obtain a mass of specific elementfrom the given mass of a compound, first convert the given mass of a compound into their corresponding moles usingmolar mass of a compound as a conversion factor. Then, use thesemoles as a conversion factor to convert the moles of a compound into the moles of specific elements present in the compound using mole–mole relationship. Convert the moles of elements into corresponding mass using molar mass of the element as a conversion factor.
Solution Summary: The author explains how the mass of hydrogen in grams could be obtained from 1.0kg of ethanol.
Interpretation: The mass of hydrogen in grams that could be obtained from 1.0kg of ethanol, C2H5OH should be determined.
Concept introduction: To obtain a mass of specific elementfrom the given mass of a compound, first convert the given mass of a compound into their corresponding moles usingmolar mass of a compound as a conversion factor. Then, use thesemoles as a conversion factor to convert the moles of a compound into the moles of specific elements present in the compound using mole–mole relationship. Convert the moles of elements into corresponding mass using molar mass of the element as a conversion factor.
10.00 g of Compound X with molecular formula C₂Hg are burned in a constant-pressure calorimeter containing 40.00 kg of water at 25 °C. The temperature of
the water is observed to rise by 2.604 °C. (You may assume all the heat released by the reaction is absorbed by the water, and none by the calorimeter itself.)
Calculate the standard heat of formation of Compound X at 25 °C.
Be sure your answer has a unit symbol, if necessary, and round it to the correct number of significant digits.
need help not sure what am doing wrong step by step please answer is 971A
During the lecture, we calculated the Debye length at physiological salt concentrations and temperature, i.e. at an ionic strength of 150 mM (i.e. 0.150 mol/l) and a temperature of T=310 K. We predicted that electrostatic interactions are effectively screened beyond distances of 8.1 Å in solutions with a physiological salt concentration.
What is the Debye length in a sample of distilled water with an ionic strength of 10.0 µM (i.e. 1.00 * 10-5 mol/l)? Assume room temperature, i.e. T= 298 K, and provide your answer as a numerical expression with 3 significant figures in Å (1 Å = 10-10 m).
Influence of salt concentrations on electrostatic interactions 2
Answer is 2.17A why not sure step by step please
What is the Debye length in a concentrated salt solution with an ionic strength of 2.00 mol/l? Assume room temperature, i.e. T= 298 K, and provide your answer as a numerical expression with 3 significant figures in Å (1 Å = 10-10 m).
Chapter 6 Solutions
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Calorimetry Concept, Examples and Thermochemistry | How to Pass Chemistry; Author: Melissa Maribel;https://www.youtube.com/watch?v=nSh29lUGj00;License: Standard YouTube License, CC-BY