Warm-Up 14 - Mass to Moles to Particles Calculations

Last updated about 1 year ago

2 questions

Note from the author:

Molar mass tells us how much a mole of something weighs. A mole contains 6.02 x 1023 of particles. 

One element = atom
Anything with a charge = ion
Compound with only non-metals = molecule
Compound with metal and nonmetal (salt) = formula unit

Instructions

Molar mass tells us how much a mole of something weighs. A mole contains 6.02 x 1023 of particles. 

One element = atom
Anything with a charge = ion
Compound with only non-metals = molecule
Compound with metal and nonmetal (salt) = formula unit

The molecule below represents propane. The red atoms are carbon and the blue atoms are hydrogen. There are no hidden atoms.

A full gas grill tank contains approximately 9.00 Kg of propane. There are 1000 grams in a kilogram.

1. There are _______ moles of propane in a full propane tank. Answer in 3 sig figs
2. There are _______ molecules of propane in this tank. Answer in 2 sig figs.

Match the chemical substance with the type of particle.

Sulfate
Chlorine
C2H3O2
Ba2+
Dinitrogen tetroxide
ZnCO3
Calcium chloride
Fe

Formula Unit
Molecule
Ion
Atom