Chapter 09 Vocab.txt
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Law of definite proportions
In a pure compound, the elements are always present in the same definite proportion by mass.
The sum of the atomic masses of all atoms present in one formula unit of a substance, expressed in atomic mass units (amu).
Percent by Mass Composition of a Compound
The percent by mass of each element present in the compound.
Percent by Mass of an Element in a Compound
The number of grams of the element present in 100 grams of the compound
The name given to the value 6.022 x 1023
A counting unit based on the number 6.022 x 1023.
The mass, in grams, of one mole of atoms, molecules, or formula units of a substance
Molar mass of an Element
A mass in grams numerically equal to the atomic mass of the element when the element is present it atomic form.
Molar Mass of a Compound
Amass in grams that is numerically equal to the formula mass of the compound.
A chemical formula that gives the smallest whole number ratio of atoms present in a formula unit of a compound
A chemical formula that gives the actual number of atoms present in a formula unit of a compound
A method used to measure the amounts of carbon and hydrogen present in a combustible compound that contains these two elements (plus any other elements) when that compound is burned in pure O2
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