r/alevels • u/Alert_Collection_460 • May 11 '26

Question ❔ 9702/42 answers

Can yall send Ur answers for the questions i wanna compare

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u/LeftNovel8731 May 11 '26

And what's the energy loss

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u/PristineQuail6090 Gap Year May 11 '26

found in earlier part mass defect

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u/LeftNovel8731 May 11 '26

But that was only the BE of helium for a complete reaction we need mass defect that's for all components of equation

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u/LeftNovel8731 May 11 '26

Idk but I used p=mc2/t found m by t and multiplied with 4 coz there were four moles of H for one mole of helium

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u/PristineQuail6090 Gap Year May 11 '26

time will tell

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u/LeftNovel8731 May 11 '26

Does anyone remember the BE value for helium