The Mole Flashcards
Mole is an SI unit to represent
Number of particles in a substance
It would be impossible to measure each individual aTom because
They are so small
Mole abbreviation
Mol
Mole is SI base unit used to measure amount of
Substance
Mole is used to measure number of carbon atoms in (example)
12.000 g of the carbon-12 isotope
Carbon-12 has 6 protons and 6 neutrons in nucleus so
Easy to measure accurately every time
Carbon-12 was given the atomic mass of 12 and is used as the standard for all other _ masses (3)
Atomic
Molecular
Formulaic
Saying you have a mole of something means you have _ of it
602,200,000,000,000,000,000,000
1 mole of Pennie’s would cover earth for a depth of
0.3 miles
1 mole of carbon-12 has exactly 6.022 x 1023 atoms and mass of
12g
Mass in grams (12g) is its
Molar mass
Atomic mass of 1 atom of carbon-12 is _ atomic mass units
12
AMU acronym
Atomic mass units
Molar mass is
Mass in grams of 1 mole of substance
The mass in grams of 1 mol of units of a substance or
Grams/mole
AMU is mass exactly equal to _ the mass of one carbon-12 atom
1/12
Report calculation of avogadros number to
Two sig figs
If you know molar mass and avogadros number, you can figure out
Mass of a single atom in grams
Molecular mass is the sum of _ in the molecule
Atomic masses
Molecular mass is given in
Atomic mass units (amu)
(Molecular mass) when adding numbers, the rule for sig figs is to round to the
Least number of decimal points
Molar mass rounded to the _ place
Hundredth (18.02)
