Chemistry: Mole Calculations
Name: ___________________________________
Circle the answer that best completes each statement:
1) If two atoms are bonded together, we call it a ( GROUP
or
MOLECULE )
2) Atoms and molecules are very, very, very, very, very, very ( SMALL
or
BIG )?
3) Scientific Notation uses a ( NEGATIVE or POSITIVE ) exponent to represent small values.
4) In a drop of water, there are really, really, really ( FEW
or
LOTS ) of atoms and molecules.
Elements are made up of atoms:
1) 1 mole of Copper = 6.02 x 1023 atoms = _____________ grams
2) 1 mole of Helium = _______________ atoms = 4 grams = __________ L
3) 1 mole of __________ = 6.02 x 1023 atoms = 20.180 grams = __________ L
4) 1 mole of Aluminum = ________________ atoms = _____________ grams
Molecules are made up of 2 or more atoms bonded together
5) 1 mole of NH3 = 6.02 x 1023 molecules = _____________ grams = __________ L
6) 1 mole of CO2 = _______________ molecules = ____________ grams = __________ L
7) 1 mole of CaCO3 = _______________ molecules = ____________ grams
8) 1 mole of C3H8 = _______________ molecules = ____________ grams = __________ L
9)
You are only asked to convert to Liters if the substance is a _____________.
Show your work for each calculation below:
1) 0.7 moles of Li is how many atoms?
1 mole of Li = ______________atoms = ____________ grams
2) 1.1 grams of silver is how many atoms?
1 mole of Ag = ______________atoms = ____________ grams
3) 26 Liters of Oxygen is how many moles?
1 mole of O = ______________atoms = ____________ grams = ____________ Liters
4) 1.9 x 1024 molecules of H2O (steam) is how many grams?
1 mole of H2O = ______________molecules = ____________ grams ____________ Liters
K. Wentworth Worksheets