Igcse Chemistry Past Paper [hot] 🎁

Using your answer from (a), calculate the volume of hydrogen gas produced at RTP. (Molar volume = 24 dm³/mol) [2]

Calculate the volume occupied by 0.5 moles of oxygen gas (O₂) at room temperature and pressure (RTP). (Molar volume = 24 dm³/mol) igcse chemistry past paper

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

From equation: 1 mol Mg → 1 mol H₂ So moles H₂ = 0.10 mol Volume H₂ = 0.10 × 24 = 2.4 dm³ (1 mark for mole ratio, 1 mark for volume) Using your answer from (a), calculate the volume

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

A) One mole of any element contains the same number of atoms as one mole of any compound. B) One mole of any gas occupies the same volume at the same temperature and pressure. C) One mole of any substance has the same mass. D) One mole of electrons has a mass of 1 g.

Which statement about the mole is correct?