Recent content by Huej

So if an alkyl halide reacts with KCN, the halide gets replaced with CN. But what if I was using a phenyl ring with two halides, Br and I attached, let's say, para to each other. If I react with KCN, do both halides get replaced, or would I need double moles of KCN to do that?

Homework Statement Give two advantageous reasons for using bulky borane (9BBN) for hydroboration of alkynes. Homework EquationsThe Attempt at a Solution I'm thinking it might have to do with the size of alkynes and bulky reagents, but I'm really not sure.

If the Universe were not expanding uniformly (i.e., at the same rate in all places), then would different places would see a different Hubble law than we do? And if If the extragalactic distance scale changed, would the Hubble constant change?

I don't think it's much of a interaction of dark matter and normal matter, but more of how one indirectly affects the other. So if there is higher fraction of dark matter, there would be smaller fraction of stars/gas (assuming total gravitational mass of the galaxy is constant) and impact the...

If luminosity increases, hypothetically, for a given galaxy, would the percentage of dark matter in that galaxy be smaller? What if the colors of the stars were to turn redder? I was thinking if the luminosity were to increase, that would mean the percentage of the normal matters increases...

I have a few questions. Would a given galaxy contain same amount of stars and gas through its lifetime? I want to say no, but I was thinking for every dead star, there will be a new star forming, and the gases would be preserved in the galaxy. And would the spiral disk component of the Milky Way...

The ideal gas law would show an inverse relationship.

I'm confused what the difference between the two are...I thought surface brightness was luminosity, but apparently it's not: L=Surface brightess x Area...But I came across a similar equation that seems to assume surface brightness is the same as apparent brightness. Please help! Edit: Also, why...

So if a resistor had length L, I could use the V=Ed equation to obtain the E field?

Homework Statement Do resistors have electric fields inside them? I'm confused because we never say voltage IN resistors. So I was wondering if charges are moving in a circuit with a resistor, would the flow of charge create E fields along the surface of resistors rather than inside...