Igcse Chemistry Past Paper | Web Tested |

Calculate the number of moles of magnesium in 2.4 g of Mg. (Ar: Mg = 24) [2]

Exam Board: Cambridge CIE 0620 Paper: 2 – Multiple Choice (Extended) – Extract Topic: Stoichiometry & Mole Calculations Time allowed: 15 minutes (extract) Total marks: 10 Section A: Multiple Choice Questions Question 1 What is the mass of one mole of carbon dioxide (CO₂)? (Ar: C = 12, O = 16)

Which statement about the mole is correct? igcse chemistry past paper

How many moles are present in 36 g of water (H₂O)? (Ar: H = 1, O = 16)

Calculate the volume occupied by 0.5 moles of oxygen gas (O₂) at room temperature and pressure (RTP). (Molar volume = 24 dm³/mol) Calculate the number of moles of magnesium in 2

What is the number of molecules in 2.0 moles of carbon dioxide? (Avogadro’s constant = 6.02 × 10²³)

[ \text{Mg (s) + 2HCl (aq) → MgCl₂ (aq) + H₂ (g)} ] How many moles are present in 36 g of water (H₂O)

A) 28 g B) 32 g C) 44 g D) 48 g