Chemistry: Moles and Chemical Reactions

These flashcards cover essential concepts related to moles and chemical reactions from the lecture notes.

What is a mole (mol)?

A mole is a collection that contains 6.022 x 10^23 particles.

What does Avogadro’s number represent?

Avogadro's number represents the number of atoms in one mole of an element, which is 6.022 x 10^23.

How is molar mass defined?

Molar mass is the mass of one mole of an element or compound, expressed in grams.

What is the relationship between grams and moles?

Molar mass factors are used to convert grams of a substance to moles of that substance.

What is the significance of subscripts in a chemical formula?

Subscripts show the number of atoms of each element in a compound and indicate the moles of each element in one mole of the compound.

How do you calculate the molar mass of a compound?

The molar mass of a compound is calculated by summing the molar masses of each element in the formula multiplied by their respective number of moles.

What is the Law of Conservation of Mass?

The Law of Conservation of Mass states that in a chemical reaction, matter cannot be created nor destroyed; total mass remains constant.

How can you find the limiting reactant in a chemical reaction?

The limiting reactant can be found by converting the amounts of reactants to moles, using the mole ratio to calculate the product formed from each reactant, and identifying which reactant produces less product.

What is percent yield?

Percent yield is the percentage of the theoretical yield obtained from a chemical reaction compared to the actual yield obtained.

What do conversion factors for moles indicate?

Conversion factors for moles indicate the ratio of the moles of different substances in a balanced chemical equation.