Finding The Formula Of A Compound

Question 1

What is empirical formula?

Answer 1

This is the most reduced ratio of atoms in a compound.

Question 2

What is molecular formula? 

Answer 2

This is the formula that shows the actual number of atoms of each element present in one molecule of a compound

Question 3

What is structural formula?

Answer 3

This is the formula that shows how atoms are bonded or arranged 

Question 4

How do you determine the empirical formula of a compound using actual message of elements present?

Answer 4

Use a table that shows:
1. Elements present
2.mass of elements present
3. Number of moles (mass over ram)
4. Mole ratio

Question 5

What is the equation for molecular formula of a compound?

Answer 5

Molecular formula= ( Empirical formula)n

n= molar or molecular formula over empirical mass

Question 6

What is a mole?

Answer 6

A mole is the amount of chemical substance which contains 6.02×10 to the power 23 particles 

Question 7

What does one mole of gas occupy at standard temperature and pressure?

Answer 7

22.4 dm cubed, 22.4 litres , 22400 cm cubed

Question 8

What does one mole of gas occupy at room temperature?

Answer 8

24.0 DM cubed, 24.0 L, 24,000 CM, cubed