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Chemistry
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John
  • Member for 7 years, 4 months
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question
10
What is melting? Which bonds do we break to melt something?
Apr 26, 2017
question
6
Why is ice less dense than water?
Apr 30, 2017
question
5
What is the proton NMR spectrum of p-methoxyphenol?
Apr 25, 2017
question
4
Do electric charges increase activation barriers?
Apr 27, 2017
question
4
Why do isomeric complexes often have different colors? [duplicate]
May 13, 2017
question
3
Why does this compound have two benzene rings? [duplicate]
Apr 28, 2017
question
2
How does cross-linking between polymer chains increase the melting point of the polymer?
Apr 24, 2017
question
2
Why is polymer B more dense than polymer A?
Apr 26, 2017
question
2
Why is bromine produced at the anode when aqueous sodium bromide undergoes electrolysis?
Apr 27, 2017
question
1
Are esters and amides soluble in cold acids/bases? [closed]
Apr 26, 2017
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15
What is a subsequence in calculus?
9
How to solve a system of linear equations modulo n?
8
If $A$ is an $n$ by $n$ integer matrix such that $A^3 = I$, then $\operatorname{tr}(A) = n\mod3$
7
Prove that $tr(A)^p = tr(A^p)\bmod p$ where $A$ is a square integer matrix and $p$ is a prime number.
6
Let $G$ be a finite matrix group in $GL_2(Q)$ such that every matrix $A\in G$ has integer entries. Prove $A^{12}= I$ for each $A$.