Practice 3.2

• Scheikunde
• Voortgezet speciaal onderwijs
• Leerroute 3

Fill in the numbers

1. 1, 1, 1
2. 1, 3, 2
3. 1, 2, 3
4. 1, 2, 1

Fill in the numbers

1. 2, 1, 2, 1
2. 1, 2, 1, 2
3. 1, 1, 2, 2
4. 2, 2, 1, 2

1. 2, 3, 3, 1
2. 2, 2, 1, 1
3. 1, 2, 2, 3
4. 1, 3, 1, 3

Sodium and chlorine react to form the salt sodiumchlorine (NaCl). What is the mass ratio between sodium : chlorine?

2 H2 + O2 --> 2 H2O
What is the mass ratio H2 : O2

Methane gas (CH4) is burned using oxygen, afterwards water and CO2 are formed. Give the mass ratio between CH4 : O2