Reacting Mass Calculations- Chemistry

Question 1

What is avogadro’s constant

Answer 1

6.02 X 10^23

Question 2

How do you calculate the number of moles?

Answer 2

Number of miles = mass / M(r)

Question 3

What is a mole?

Answer 3

A mole is a measurement of chemical amounts. A mole is a simple way of counting atoms. One mole of any substance is it’s relative mass M(r) in grams. A single mole of any substance contains the same number (6.02 X 10^23) of atoms/molecules/ions/particles

Question 4

How do you calculate a concentration?

Answer 4

Concentration = amount of solute/volume of solution

Question 5

What is a limiting reagent?

Answer 5

A limiting reagent is the reactant that is completely used up during a chemical reaction. A reagent is in excess if some of it is left over once the reaction finishes.

Question 6

What does concentration mean?

Answer 6

The amount of a substance dissolved in a certain volume of a solution

Question 7

Concentration = mass/volume

Question 8

How do you calculate percent uncertainty?

Answer 8

Range of measurements / mean. X 100