(a) Interpretation: The grams present in 1 unified atomic mass unit should be determined. Concept introduction: Atomic weight of the element represents weighted average of mass of isotopes that naturally occurs in nature. For example, carbon has two major naturally occurring isotopes 6 12 C and 6 13 C . Therefore, the atomic weight can be represent as follows: Atomic weight of C = ( ( Mass of 6 12 C ) ( Abundance of 6 12 C ) + ( Mass of 6 13 C ) ( Abundance of 6 13 C ) )
(a) Interpretation: The grams present in 1 unified atomic mass unit should be determined. Concept introduction: Atomic weight of the element represents weighted average of mass of isotopes that naturally occurs in nature. For example, carbon has two major naturally occurring isotopes 6 12 C and 6 13 C . Therefore, the atomic weight can be represent as follows: Atomic weight of C = ( ( Mass of 6 12 C ) ( Abundance of 6 12 C ) + ( Mass of 6 13 C ) ( Abundance of 6 13 C ) )
Solution Summary: The author explains that atomic weight of the element represents weighted average of mass of isotopes that naturally occur in nature.
The grams present in 1 unified atomic mass unit should be determined.
Concept introduction:
Atomic weight of the element represents weighted average of mass of isotopes that naturally occurs in nature. For example, carbon has two major naturally occurring isotopes 612C and 613C. Therefore, the atomic weight can be represent as follows:
Atomic weight of C=((Mass of 612C)(Abundance of 612C)+(Mass of 613C)(Abundance of 613C))
Interpretation Introduction
(b)
Interpretation:
Total number of atoms equivalent to a mole should be determined.
Concept introduction:
Periodic table represents a systematic arrangement according to element’s physical as well as chemical properties. Here, elements are represented as a two-letter symbol and are arranged in increasing order of atomic number. First letter of symbol is always represented in capital letters and second letter is always represented as small letter.
Is nucleophilic acyl substitution an SN1 or SN2 reaction?
Draw product A, indicating what type of reaction occurs.
NH2
F3C
CF3
NH
OMe
NH2-NH2, ACOH
A
Photochemical smog is formed in part by the action of light on nitrogen dioxide. The wavelength of radiation absorbed by NO2 in this reaction is 197 nm.(a) Draw the Lewis structure of NO2 and sketch its π molecular orbitals.(b) When 1.56 mJ of energy is absorbed by 3.0 L of air at 20 °C and 0.91 atm, all the NO2 molecules in this sample dissociate by the reaction shown. Assume that each absorbed photon leads to the dissociation (into NO and O) of one NO2 molecule. What is the proportion, in parts per million, of NO2 molecules in this sample? Assume that the sample behaves ideally.
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Step by Step Stoichiometry Practice Problems | How to Pass ChemistryMole Conversions Made Easy: How to Convert Between Grams and Moles; Author: Ketzbook;https://www.youtube.com/watch?v=b2raanVWU6c;License: Standard YouTube License, CC-BY