12 terms

Chemistry chapter 10

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Hydrate
Compound that has a specific number of water molecules bound to its atoms
Percent composition
Percent by mass of each element in a compound
Molar mass
mass is grams of one mole of any pure substance
Empirical formula
Formula of a compound with the smallest whole-number mole ratio of the elements
Molecular formula
Specifies the actual number of atoms of each element in one molecule of a compound
Molar mass
The ----- of carbon is equal to carbons atomic mass and has units g/mol
True
One mole of water contains 6.02x10'23 molecules of water
Gram/mole
Si unit of molar mass
40.097g
One mole silicon has mass of 28.086g and carbon has mass of 12.011. What is mass of mole of silicon carbride?
NaBr*2N2O
Sodium bromide dihydrate
Avogadro's number
6.02x10'23
Relationship between mole Avogadro's number and molar mass
Mole is a name for a number which is 6.02x10'23 which is Avogadro's number. Mass in grams of this amount (1mole) equals the molar mass EX) 1 mole of sulfur atom. Atoms = 6.02x10'23. Mass=32g. Which is the molar mass