3.4 Equations And Calculations Flashcards
1
Q
What does 2Mg + O2 –> 2MgO tell us in regards to moles?
A
2 moles of magnesium atoms react with 1 mile of oxygen molecules to produce 2 moles of magnesium oxide
2
Q
What does 2Mg + O2 –> 2MgO tell us in regards to atoms?
A
That 2 atoms of magnesium react with 1 molecule of oxygen to form 2 magnesium ions and 2 oxide ions
3
Q
What does 2Mg + O2 –> 2MgO tell us in regards to grams?
A
48g of magnesium reacts with 32g of oxygen to give 80g of magnesium oxide (Ar of Mg = 24, Ar of O = 16)
4
Q
What does 2Mg + O2 –> 2MgO tell us in regards to relative masses?
A
(2 x Ar of Mg) + (2 x Ar of O) gives (2 x Mr of MgO)
5
Q
See revision guide and your class book to help with this section
A
Page 51 and 52
