(a) How many molecules are there in 1L of air at a temperature of 27°C? (b) How many kilomoles of air are in that volume? (c) The best vacuum that can be produced corresponds to a pressure of about 10-10 atm. How many molecules remain in 1 L?

(a) How many molecules are there in 1L of air at a temperature of 27°C? (b) How many kilomoles of air are in that volume? (c) The best vacuum that can be produced corresponds to a pressure of about 10-10 atm. How many molecules remain in 1 L?

Chemistry: Matter and Change

1st Edition

ISBN:9780078746376

Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom

Publisher:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom

Chapter13: Gases

Section: Chapter Questions

Problem 77A

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Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.

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(28) (a) How many molecules are there in 1L of air at a temperature of 27 °C?
(b) How many kilomoles of air are in that volume? (c) The best vacuum that
can be produced corresponds to a pressure of about 10-16,
molecules remain in 1 L?
atm. How many

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