IGCSE Chemistry pastpaper 0620/42/m/j/21 (Part-1)

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In this video we will solve and explain Cambridge IGCSE chemistry paper 42
May/June 2021 (Part-1).

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[DrMonaSeif]

For Question 3 (b) Calculate the volume of carbon dioxide formed at room temperature and pressure.
The final answer is CORRECT; however there is a little writing mistake the question asked for the volume and NOT the number of moles, so we multiply the number of moles ( which is 0.075 moles) by the gas`s molar volume (which is 24 dm³) to get the answer 1.8 dm³.

[roha]

You are suppose to multiply number of moles with 24 for volume, not divide.

[doaamostafa]

دكتور ممكن نشرح طريقة الحل اول سنة IG و الولاد مش بتعرف تحل كويس مهما ذاكرت ممكن فيديو لطريقة حل كل بيبر من توبك الصعبة