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Molecular mass is defined as the:
- a)Mass of one molecule of any substance compared with the mass of one atom of C – 12
- b)Mass of one atom compared with the mass of one atom of hydrogen
- c)Mass of one atom compared with the mass of one molecule
- d)None of the above
Correct answer is option 'A'. Can you explain this answer?
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Molecular mass is defined as the:a) Mass of one molecule of any subst...
- Molecular mass is a number equal to the sum of the atomic masses of the atoms in a molecule. The molecular mass gives the mass of a molecule relative to that of the 12C atom, which is taken to have a mass of 12.
- Molecular mass is a dimensionless quantity, but it is given the unit Dalton or atomic mass unit as a means of indicating the mass is relative to 1/12th the mass of a single atom of carbon-12.
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Molecular mass is defined as the:a) Mass of one molecule of any subst...
Molecular Mass Definition
Molecular mass is defined as the mass of one molecule of any substance compared with the mass of one atom of carbon-12.
Explanation
- Mass of one molecule: Molecular mass refers to the total mass of all the atoms in a molecule. It is calculated by adding up the atomic masses of all the atoms in the molecule.
- Comparison with carbon-12: The molecular mass is then compared to the mass of one atom of carbon-12, which is assigned a mass of exactly 12 atomic mass units (amu). This comparison helps in determining the relative mass of the molecule.
- Importance: Molecular mass is a crucial concept in chemistry as it helps in determining the stoichiometry of chemical reactions, calculating molar masses, and understanding the properties of substances at the molecular level.
- Example: For example, the molecular mass of water (H2O) is approximately 18 amu (2 atomic masses of hydrogen + 1 atomic mass of oxygen). This means that one molecule of water is 18 times heavier than one atom of carbon-12.
In conclusion, molecular mass provides valuable information about the composition and relative weight of molecules, making it an essential concept in the field of chemistry.
Molecular mass is defined as the mass of one molecule of any substance compared with the mass of one atom of carbon-12.
Explanation
- Mass of one molecule: Molecular mass refers to the total mass of all the atoms in a molecule. It is calculated by adding up the atomic masses of all the atoms in the molecule.
- Comparison with carbon-12: The molecular mass is then compared to the mass of one atom of carbon-12, which is assigned a mass of exactly 12 atomic mass units (amu). This comparison helps in determining the relative mass of the molecule.
- Importance: Molecular mass is a crucial concept in chemistry as it helps in determining the stoichiometry of chemical reactions, calculating molar masses, and understanding the properties of substances at the molecular level.
- Example: For example, the molecular mass of water (H2O) is approximately 18 amu (2 atomic masses of hydrogen + 1 atomic mass of oxygen). This means that one molecule of water is 18 times heavier than one atom of carbon-12.
In conclusion, molecular mass provides valuable information about the composition and relative weight of molecules, making it an essential concept in the field of chemistry.
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Molecular mass is defined as the:a) Mass of one molecule of any substance compared with the mass of one atom of C – 12b) Mass of one atom compared with the mass of one atom of hydrogenc) Mass of one atom compared with the mass of one moleculed) None of the aboveCorrect answer is option 'A'. Can you explain this answer?
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