A sample of glucose, C 6 H 12 O 6 , contains 1.250×10 21 carbon atoms. (c) How many moles of glucose does it contain?

Hey everyone, we're asked to consider a sample of nicotine that was observed to have 3.561 times 10 to the 25 nitrogen atoms were asked to calculate the number of moles of nicotine in the sample for this question, let's first write out our pathway. We were given nitrogen atoms will then have to convert into mole of nitrogen by using avocados number. And next we can use our multiple ratios to get to mole of nicotine. Now that we've written out our pathway, let's go ahead and use our dimensional analysis to answer this question, starting with 3.561 times 10 to the nitrogen atoms. We're going to use avocados number here and we know that we have 6.22 times 10 to 23rd Atoms of nitrogen per one mole of nitrogen. Next, using our multiple ratios, we can see that we have two mole of nitrogen in one mole of our nicotine and we can see that through the subscript of two in our formula. So calculating this out and canceling out all of our units, We end up with an answer of 29. mole of nicotine. Now, I hope this made sense. And let us know if you have any questions

Ch.3 - Chemical Reactions and Reaction Stoichiometry

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Brown 14th Edition

Ch.3 - Chemical Reactions and Reaction Stoichiometry

Problem 41c

Chapter 3, Problem 41c

A sample of glucose, C₆H₁₂O₆, contains 1.250×10²¹ carbon atoms. (c) How many moles of glucose does it contain?

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Determine the number of moles of carbon atoms using Avogadro's number. Avogadro's number is 6.022 \times 10^{23} atoms/mol.

Calculate the moles of carbon atoms by dividing the given number of carbon atoms (1.250 \times 10^{21}) by Avogadro's number.

Recognize that each molecule of glucose (C_6H_{12}O_6) contains 6 carbon atoms.

Calculate the moles of glucose by dividing the moles of carbon atoms by 6, since there are 6 carbon atoms per molecule of glucose.

Conclude with the moles of glucose calculated from the moles of carbon atoms.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Mole Concept

The mole is a fundamental unit in chemistry that quantifies the amount of substance. One mole contains approximately 6.022 x 10²³ entities, such as atoms or molecules. This concept allows chemists to convert between the mass of a substance and the number of particles it contains, facilitating calculations in stoichiometry.

Avogadro's Number

Avogadro's number, 6.022 x 10²³, is the number of atoms, molecules, or particles in one mole of a substance. It serves as a bridge between the macroscopic scale of substances we can measure and the microscopic scale of atoms and molecules. Understanding this number is crucial for converting between moles and the number of particles.

Molar Mass

Molar mass is the mass of one mole of a substance, typically expressed in grams per mole (g/mol). For glucose (C₆H₁₂O₆), the molar mass can be calculated by summing the atomic masses of its constituent elements. Knowing the molar mass is essential for converting between grams and moles, which is necessary for solving problems involving quantities of substances.

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Molar Mass Concept

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A sample of the male sex hormone testosterone, C₁₉H₂₈O₂, contains 3.88×10²¹ hydrogen atoms. (b) How many molecules of testosterone does it contain?

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Textbook Question

The allowable concentration level of vinyl chloride, C₂H₃Cl, in the atmosphere in a chemical plant is 2.0×10⁻⁶ g/L. How many moles of vinyl chloride in each liter does this represent?

A sample of glucose, C6H12O6, contains 1.250×1021 carbon atoms. (c) How many moles of glucose does it contain?

Verified video answer for a similar problem:

Key Concepts

Mole Concept

Avogadro's Number

Molar Mass

A sample of glucose, C₆H₁₂O₆, contains 1.250×10²¹ carbon atoms. (c) How many moles of glucose does it contain?