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Any Type of Doubts in ENg Phy Chem Bio or Math....Ask me here!!!
- Thread starter Prathmesh Thakkar
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iron (ii ) ions in fe0 react with oxygen to form fe2O3 ?which statement about the iron is correct ?
1. iron (ii) ions are oxidised because they gain oxygen
2. iron ( ii) are reduced because they lose oxygen
are oxidsed because they gain oxygen
are reduced because they lose oxygen ?
which one is it, and how to find the answer ?
1. iron (ii) ions are oxidised because they gain oxygen
2. iron ( ii) are reduced because they lose oxygen
are oxidsed because they gain oxygen
are reduced because they lose oxygen ?
which one is it, and how to find the answer ?
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Easy xDD
it's a redox reaction...
it's a redox reaction...
http://www.xtremepapers.com/papers/CIE/Cambridge IGCSE/Chemistry (0620)/0620_w07_qp_1.pdf
Hey guys...number 33 is supposed to be D...however, isn't plating iron with zinc also a way of preventing rusting?
Hey guys...number 33 is supposed to be D...however, isn't plating iron with zinc also a way of preventing rusting?
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Already answered that. in other topic
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Thnks , btw i was just confused because oxi is loss of electrons, and i thought that for i.e 2cu---> cu2 since it loses electrons, however i got it wrong, is oxi basically the adding of electrons ? so if its 2X----> its gonna be x2 ?
Thanx!Already answered that. in other topic
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Letter D for the first one...Impurity lowers the melting point and raises the boiling point.
Letter D for the last one too.
Sorry for that.I'm not doing Physics, hence I replied chem questions only.
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The reaction is 2NO + O2 --> 2NO2. If you see, all the chemicals are gases... I only know that NO2 is brown in colour and the rest of the gases are colourless... so how to calculate the amount fr product formed per unit time.....or calculate the usage of product per unit time...???? The question asks for the practical details and procedure...
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ya ofcourse i did!!!!
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thanks anyway!
- Messages
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- 942
- Points
- 103
- Messages
- 156
- Reaction score
- 197
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I'm not so sure.. but most probably it's A or D..
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it's D, but how??I'm not so sure.. but most probably it's A or D..
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See somya..
There is no friction ... so nothing is opposing the speed of the ball ..
hence it is going faster and faster ... hence D.
There is no friction ... so nothing is opposing the speed of the ball ..
hence it is going faster and faster ... hence D.