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Chapter 26: Problem 9

a) What number of hydrogen atoms is found in one dozen methane molecules? b) What number of chlorine atoms is found in one dozen carbon tetrachloride molecules? c) Explain how you arrived at your answer to part b using grammatically correct sentences.

Short Answer

Expert verified
a) There are 48 hydrogen atoms in a dozen methane molecules.\nb) There are 48 chlorine atoms in a dozen carbon tetrachloride molecules.\nc) The answer was arrived at by understanding the molecular structure of carbon tetrachloride, counting the number of chlorine atoms in one molecule, and then multiplying by the given quantity (one dozen).

Step by step solution

01

Number of Hydrogen Atoms in a Methane molecule

A methane molecule consists of 1 carbon atom and 4 hydrogen atoms. So, every molecule of methane has 4 atoms of hydrogen.
02

Calculate Hydrogen Atoms in One Dozen Methane Molecules

A dozen equals 12. Therefore, in one dozen methane molecules, there will be 12 (dozen) multiplied by 4 (number of hydrogen atoms in one molecule), which equals 48 hydrogen atoms.
03

Determine the Number of Chlorine Atoms in a Carbon Tetrachloride molecule

A carbon tetrachloride (CCl4) molecule consists of 1 carbon atom and 4 chlorine atoms. Hence, every molecule of carbon tetrachloride has 4 atoms of chlorine.
04

Calculate Chlorine Atoms in One Dozen Carbon Tetrachloride Molecules

As established previously, a dozen equals 12 items. Therefore, there would be 12 (dozen) multiplied by 4 (number of chlorine atoms in one molecule), which equals 48 chlorine atoms.
05

Formulate Your Explanation for Part B

In order to answer part b, consider the molecular structure of carbon tetrachloride. It consists of 1 carbon atom and 4 chlorine atoms. Therefore, in a single molecule of carbon tetrachloride there are 4 chlorine atoms. Given that we were looking for the number of chlorine atoms in a dozen such molecules, we multiplied the 4 chlorine atoms by 12. So, there are 48 chlorine atoms in a dozen carbon tetrachloride molecules.

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Most popular questions from this chapter

a) What number of methane molecules is one mole of methane molecules? b) What number of carbon atoms is found in one mole of methane molecules? c) What number of hydrogen atoms is found in one mole of methane molecules? d) Explain how you arrived at your answer to part c using grammatically correct sentences.

What number of molecules is a dozen methane, \(\mathrm{CH}_{4}\), molecules?

a) What number of legs is found in one mole of chihuahuas? b) How many moles of legs are found in one mole of chihuahuas? c) Explain how you arrived at your answer to part b using grammatically correct sentences.

a) What number of carbon atoms are found in one dozen methane, \(\mathrm{CH}_{4}\), molecules? b) What number of carbon atoms is found in one dozen carbon tetrachloride, \(\mathrm{CCl}_{4}\), molecules?

Based on your answers to CTQ 12, calculate: a) the mass (in grams) of one mole of methane molecules (to two decimal places). Show your work. b) the mass (in grams) of one mole of carbon tetrachloride molecules (to two decimal places). Show your work.
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