Quantitative chemistry- main focuses

Question 1

What is one mole of a substance?

Answer 1

An amount of that substance that contains an avogadro number of particles

Question 2

What is the mole/ Avogadro number?

Answer 2

6.02x10 to power of 23

Question 3

If carbon has a relative formula mass of 12, how much does one mole of carbon weigh?

Answer 3

12g

Question 4

When does a reaction stop?

Answer 4

When reactant is used up

Question 5

What is directly proportional to the amount of limiting reactant?

Answer 5

Amount of product formed

Question 6

How can you calculate the mass of a product formed in a reaction?

Answer 6

Using the mass of the limiting reactant and the balance reaction equation

Question 7

What is the equation to work out the volume of gas?

Answer 7

Volume of gas= mass of gas/ mr of gas x2 4

Question 8

What is concentration?

Answer 8

Amount of a substance in a certain volume of solution

Question 9

What happens to concentration the more solute there is in a given volume?

Answer 9

The more concentrated

Question 10

How to measure the concentration in g/dm3?

Answer 10

Concentration= mass of solute/ volume of solvent

Question 11

What is the concentration equation in mol/dm3

Answer 11

concentration= number of moles of solute/volume of solvent

Question 12

How can you find out the concentration of an unknown substance if you know the concentration of the other solution?

Answer 12

Use the volume from the titration experiment, along with the reaction equation to find out conc

Question 13

How do you convert mol/dm3 to g/dm3?

Answer 13

Find the concentration in mol/dm3, then convert the concentration by using mass= moles x mr