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Abdul Hannan Khan

I would like to help children develop thier critical thinking skills.

Total answers3 questions answered
Total hoursUnder 5 hours taught
Total resourcesUnder 3 resources

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Hi, I'm Abdul Hannan

Studied a BSc in Chemistry from the University of Kent. I've always believed that teaching is more than memorizing and dictating information, teaching is about developing the next generation.

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University of Kent

Chemistry (2015 - 2018)

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My answers

Asked by Ruby

Chemistry ⚛️
Reaction between Zinc and dilute sulfuric acid: a student measures the time taken for 25cm3 of H2 gas to be given off. zinc granules:225sec, zinc pellet:114sec. Mean rate of reaction=? For each?
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Abdul Hannan Khan

I would like to help children develop thier critical thinking skills.

You just divide 25 cm^3 by 225 sec for the zinc granules, and for the zinc pellets 25 cm^3 by 114 sec. This will give you a reaction rate in cm^3 p...Learn more

Asked by Ruby

Chemistry ⚛️
What Mass of zinc reacts with sulfric acid is to make 2.08x10^-3Grams of H2 gas?
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Abdul Hannan Khan

I would like to help children develop thier critical thinking skills.

Carrying on from previous answer (apologies accidentally submitted the answer) Rearrange the equation to: Mass = RMM * No of moles Mass = 65.38 (...Learn more

Asked by Ruby

Chemistry ⚛️
What Mass of zinc reacts with sulfric acid is to make 2.08x10^-3Grams of H2 gas?
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Abdul Hannan Khan

I would like to help children develop thier critical thinking skills.

I'm assuming this is a 1:1 reaction between Zinc and Sulfuric acid. Based on this we know that the no of moles on the on both sides are the same and...Learn more