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Chemistry: Post your doubts here!

sorry for my handwriting lol
- Jessie N.
- Post #6,632
- Nov 20, 2013
- Forum: A-Levels
Chemistry: Post your doubts here!

hope you can understand :D
- Jessie N.
- Post #6,631
- Nov 20, 2013
- Forum: A-Levels
Physics: Post your doubts here!

Awww thank you！！！so the 'All resistances are 1kΩ.' is just distracting. ˊ_>ˋ
- Jessie N.
- Post #6,077
- Nov 19, 2013
- Forum: A-Levels
Chemistry: Post your doubts here!

thanks a lot！！！！！
- Jessie N.
- Post #6,622
- Nov 19, 2013
- Forum: A-Levels
Chemistry: Post your doubts here!

A solution of Sn2+ ions will reduce an acidified solution of MnO4– ions to Mn2+ ions. The Sn2+ ions are oxidised to Sn4+ ions in this reaction. How many moles of Mn2+ ions are formed when a solution containing 9.5 g of SnCl 2 (Mr: 190) is added to an excess of acidified KMnO4 solution? help...
- Jessie N.
- Post #6,618
- Nov 18, 2013
- Forum: A-Levels
Physics: Post your doubts here!

Attached the solution for first question 2nd question pls visit this website： http://www.ocgi.okstate.edu/owpi/EducOutreach/Library/Lesson1_windenergycalc.pdf 3rd question also troubled me. seeking for help too.:(((
- Jessie N.
- Post #6,073
- Nov 18, 2013
- Forum: A-Levels

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