. When iron rusts in air, iron(III) oxide is produced. How many moles of oxygen react with 2.4 mol of iron in the rusting reaction? 4Fe( s ) + 3O 2 ( g ) → 2Fe 2 O 3 ( s )

1.8 moles of oxygen react with 2.4 moles of iron in the rusting reaction.

Explanation:

Moles of iron = 2.4 moles

According to reaction , 4 moles of iron reacts with 3 moles of oxygen gas.

Then 2.4 moles of iron will react with ;

of oxygen gas.

1.8 moles of oxygen react with 2.4 moles of iron in the rusting reaction.

1. 1 mole of anything contains 6.022x10^23 pieces  

d  

2. a  

3. c, number  

5. 1.24x10^24atoms / 6.022x10^23atoms/mole = 2moles h2 atoms  

6. fe2br3 mass = 2moles x mass fe + 3 moles x mass br  

molar mass = grams / number of moles = g/mole  

to find moles = g / molar mass  

to find mass = g = molar mass / moles