AQA GCSE Combined C4 Revision

Using your periodic Table, calculate the formula mass of N₂.

Answer:

(a)  

Using your periodic Table, calculate the formula mass of CH₄.

Answer:

(a)  

Using your periodic Table, calculate the formula mass of CaCO₃.

Answer:

(a)  

Using your periodic Table, calculate the formula mass of NH₃.

Answer:

(a)  

How many moles of carbon atoms are there in 5g of carbon?

• 60 mol
• 17 mol
• 0.42 mol
• 7 mol

How many moles are there in 12.7g of CaF₂?

• 0.20 mol
• 1,000.76 mol
• 6.14 mol
• 0.16 mol

The number 6.02 x 10²³ is called...

• Obama's number
• Bohr's number
• Trump's number
• Avogadro's number

An element's molar mass can be found on what part of an element's entry on the periodic table?

• atomic number

• atomic mass

• group number

• it can't be found on the periodic table

You have 2 moles of graphite (KC₈) in your pencil. How many grams of graphite are in your pencil?

• 135.19 g

• 270.37 g

• 67.59 g

• 134 g

How many grams of carbon dioxide are in 0.5 mol of carbon dioxide?

• 11 g

• 44.009 g

• 22.005 g

• 88.018 g