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Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074

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BuyFindarrow_forward

Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074
Textbook Problem

Saccharin, a molecular model of which is shown below, is more than 300 times sweeter than sugar. It was first made in 1807, when it was common practice for chemists to record the taste of any new substances they synthesized.

(a) Write the molecular formula for the compound, and draw its structural formula. (S atoms are yellow.)

(b) If you ingest 125 mg of saccharin, what amount (moles) of saccharin have you ingested?

(c) What mass of sulfur is contained in 125 mg of saccharin?

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(a)

Interpretation Introduction

Interpretation: For the given molecular model of saccharin, the molecular formula, structural formula and its structural formula are needed to be determined.

Concept introduction:

  • Molecular formula of compound is the representation with symbols of each atom and their numbers present in the compound.
  • Structural formula of compound is the representation of all the atoms and their respective bonding in a plane.
Explanation

In the given model of saccharin, there are C atoms, 5 H atoms, 1 N atom, 3 O atoms and 1 S atom.

Therefore, the molecular formula of saccharin is C7H5N

(b)

Interpretation Introduction

Interpretation: The number of moles saccharin in 125g is needed to be determined.

Concept introduction:

Moles: One mole is equivalent to the mass of the substance consists same number of units equal to the atoms present in 12g of 12C.

From given mass of substance moles could be calculated by using the following formula,

  Molesofsubstance GivenmassofsubstanceMolecularmass

(c)

Interpretation Introduction

Interpretation: The mass of sulfur present in give amount of saccharin should be determined.

Concept introduction:

Moles: One mole is equivalent to the mass of the substance consists same number of units equal to the atoms present in 12g of 12C.

From given mass of substance moles could be calculated by using the following formula,

  Molesofsubstance GivenmassofsubstanceMolecularmass

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