Sapience

i put NaF as highest BP because highest EN difference..but idk if that's a viable reason.

dolcevalse

shoot, I imagined grad cylinders as a beaker .. wth is wrong with me, lol. well that's 1 question wrong!

princeton, weren't they asking for highest MP with the Na and halogens? I chose NaAt. BP would be completely diff.

dolcevalse

omg, i can't believe i read BP as MP.. wow, maybe i should just cancel my scores right now

Sapience

he asked Bp

Echelon32

dolce - whats the reasoning for NaAt having highest MP? Wouldn't it still be NaF for MP too?

dolcevalse

highest MP means IMFs are weak .. At is much less EN than F, so NaAt would be weakest

Sapience

Oh...for the element that would react the most with water i put Cr is that right since it would oxidize easily?

Echelon32

wouldn't a higher MP mean that more heat is required to break the bonds and therefore signify stronger IMFs?

princeton08540

wow, if C --> CO2 is oxidation, I'm so far so good

Others:

- Acid rain and limestone = neutralization
- Acid rain and some sulfur compound in the T/F/CE was what? I forgot the true and false parts (dammit)
- 2.0 for the pH somewhere
- 1.0 x 10^-3 somewhere near the end
- heat of sublimation?

Walton12

Rb because its an alkali

dolcevalse

higher BP means more heat required to break IMFs
higher MP = something melts at 20 degree Celsius (for example) so it has weak IMF .. if that made sense

princeton08540

agree with Walton, all the other answer choices were transition metals and they don't react more readily with water than 1A metals.

dolcevalse

oops, nvm I'm talking abt a diff question (for the C's)

dolcevalse

Walton, I don't think Rb was a choice .. all the choses started with the letter C.
I got last 3 right, princeton, i skipped the first, not sure about 2nd.

Echelon32

Yes to Walton - Rb is crazy reactive
And I think I agree with all of your answers princeton (though I don't remember acid rain in T/F/CE)