substitution and elimination reactions, carbonyl reactions (additions, reductions, interconversions, and alpha-reactivity), and the fundamentals of biological molecules (carbohydrates, DNA, and RNA).

Reaction: Arsenal dismantle holders Real Madrid 3-0 in the Champions League quarter-final first leg with "complete performance" Declan Rice scores two incredible free-kicks in 12 minutes, as Mikel ...

But it's time for us to bring it to a close now, so here's a recap of all the reaction, analysis and statistics we have gone through today. Thanks for tuning in and do head over to our new live ...

Sarah Vine and Andrew Pierce bring their own no-holds-barred opinions, insights and reaction (clue is in the title) to the biggest stories of the week. New episodes every Wednesday, wherever you ...

To balance an unbalanced equation, you need to add numbers to the left of one or more formulae. Here is one way to work out how to do this for the reaction between nitrogen and hydrogen.

Institute of Drug Metabolism and Pharmaceutical Analysis, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China ...

School of Life Sciences and Medicine, Shandong University of Technology, Zibo 255000, China ...