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AQA chemistry a couple of synoptic queries
Hey I'm revising chem and have a couple of quick queries. If anyone can help that would be brill.
module 5
1. Is scandium a transition metal or not?
-It's atom has a partially filled 3d sub level but it's ion Sc 3+ doesn't. In the text book it says "a transition metal must have a partially filled 3d sub level in atom or ion." But in revision guide it says the ion must be have the partially filled sub level.
module 2
2. I thought delta H= Q/moles but in text book it does delta H= (Q * Mr)/mass. Does anyone know which one is right?
Thanks!!
module 5
1. Is scandium a transition metal or not?
-It's atom has a partially filled 3d sub level but it's ion Sc 3+ doesn't. In the text book it says "a transition metal must have a partially filled 3d sub level in atom or ion." But in revision guide it says the ion must be have the partially filled sub level.
module 2
2. I thought delta H= Q/moles but in text book it does delta H= (Q * Mr)/mass. Does anyone know which one is right?
Thanks!!
lolyeah for part 2,
mass/Mr = moles.
mass/Mr = moles.
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