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The formula mass of a compound is the mass in grams of Avogadro's number (6.0221415 × 1023) of molecules.

For example NaCl (table salt) has a formula mass of 58.44277 (Na 22.9897, Cl 35.453) Avogadro's number of them weighs 58.44277 grams.

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15y ago
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12y ago

I am doing my chemistry homework now, and that's on of the questions, so if someone could provide an answer...that would be great!!!

Example for hydrochloric acid:

- Write the chemical formula of the compound: HCl

- Search the atomic masses of the elements

H = 1,00794

Cl = 35,454

- The molar mass is the sum (H + Cl): 36,460 94.

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11y ago

Formula mass represents the mass of an individual formula unit of a compound.
Formula mass represents the mass of an individual formula unit of a compound.

Apex lol

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9y ago

We can find Atomic Mass and mass number in chemical elements. Atomic mass is about weight of the atom. Mass number is about total of neutrons and protons.

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14y ago

Molecular mass and formula mass represent the mass of an individual molecule or formula unit of a compound.

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6y ago

The molar mass is the sum of atomic weights of elements in the molecule, expressed in grams.

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Q: Which of the following best describes how molecular mass and formula mass are related to the mass of a compound?
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