1. An essay written by carbon pencil on a paper weighs 0.5 mg. How many carbon atoms present inthe essay?2. A student collected 0.025 moles of carbon atoms on a piece of paper by drawing continuously for5 minutes with a pencil (as demonstrated in Video). How many minutes it will take to have 2.4 mgof carbon on the same paper?

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Answered: 1. An essay written by carbon pencil on…

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Chemistry

1. An essay written by carbon pencil on a paper weighs 0.5 mg. How many carbon atoms present in the essay?

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

Chapter10: The Mole

Section10.3: Moles Of Compounds

Problem 44PP

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Concept explainers

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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1. An essay written by carbon pencil on a paper weighs 0.5 mg. How many carbon atoms present in
the essay?
2. A student collected 0.025 moles of carbon atoms on a piece of paper by drawing continuously for
5 minutes with a pencil (as demonstrated in Video). How many minutes it will take to have 2.4 mg
of carbon on the same paper?

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