The mass of earth's atmosphere is 5.3x1015 metric tons. The atmospheric abundance of helium is 0.7ppm when expressed as a fraction by mass instead of by volume .How many metric tons of helium are there in the atmosphere. How may moles of Helium is this

The mass of earth's atmosphere is 5.3x1015 metric tons. The atmospheric abundance of helium is 0.7ppm when expressed as a fraction by mass instead of by volume .How many metric tons of helium are there in the atmosphere. How may moles of Helium is this

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter19: The Chemistry Of The Main-group Elements

Section: Chapter Questions

Problem 87QRT: Assume that the radius of Earth is 6400 km, the crust is 50. km thick, the density of the crust is...

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Concept explainers

Thermochemistry

Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.

Exergonic Reaction

The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.

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The mass of earth's atmosphere is 5.3x10¹⁵ metric tons. The atmospheric abundance of helium is 0.7ppm when expressed as a fraction by mass instead of by volume .How many metric tons of helium are there in the atmosphere. How may moles of Helium is this

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