Under Ground Worm Eater
What is a standard scientific unit for measuring large quantities of very small entities such as atoms?
The mole (mol) is ______
How many moles are in 16 grams of He?
4 mols
The sum of all the atomic masses in a molecule or compound; the mass in grams of one mole of a substance.
what is Molar mass?
Avogadro’s number is ______
What is 6.02 x 1023?
How many oxygen atoms (O) are in a mole?
What is the mass of H2O?
18.01g/mol
How many grams are in 2.00 moles of H2O?
36 grams
The founder of the Mole
Who is Lorenzo Romano Amedeo Carlo Avogadro?
The number of moles in 6.02 x 1023 atoms of oxygen is ______
What is 1?
What is the mass of CO2?
44 grams of CO2
How many molecules are in 2.00 moles of H2O?
1.2x 1024 molecules
If a student has Avogadro’s number of CO2 molecules, how many molecules of CO2 does he/she have?
The molar mass of a substance may be defined as the mass of _______ molecules of the substance.
What is 6.02 x 1023
What is the mass of 1 mol of CO2?
44 grams CO2
How many moles are in 165 grams of CO2?
3.75 mols
The small numbers after the element’s name.
What is Subscript?
The quantity of a substance that has a weight, measured in grams, that is numerically equal to the molecular weight of that substance. Expressed as 6.02 × 1023 particles (Avogadro’s number); mol is used in equations, mole is used in writing.
What is a mole?
What is the mass of H3PO4?
97.96 g/mol
The atoms, molecules, ions, or formula units present in a substance
What is a particle?
A fundamental principle of science stating that mass cannot be created or destroyed in a closed system through ordinary chemical or physical means
What is the Law of Conservation of Mass?