Recent content by sigmavirus

well volume is inv. proportional to pressure, so pressure will decrease. temperature, on the other hand, is dir. proportional, so it will also increase.

yeah, Hess's law is the way to go. and have fun with thermochem. it was hell for my class last year. i hope you survive.

i solved it using a period of 2\pi. thanks for the help!

yeah. the reason that there is a negligible effect is that there is a small resistance. besides, the wording in 2 is that "it can be said". so now the question is, why can this be said?

yeah thermochem was always hell. i think you need to find the amount of heat from the reaction. is that enthalpy value J/mol? well, you know how many moles are reacting (simple conversion). you also know the mass of the final solution and as was stated in the previous post, you have heat...

Homework Statement Automobile of mass m=2000kg has a suspension that sags 10 cm when the entire auto is placed on it. The amp. of oscillation decreases 50% with every complete oscillation. Solve for (a) spring constant k and (b)the damping constant b for one wheel (assuming each wheel...

oh i see. sorry.

we're talking about HEAVIER elements, though

i solved it with another equation. it was amax=\omega2xmax. my teacher says i got the right answer. thanks a lot.

yeah that would work because you would be liberating the oxygen from the metal through electrolysis, so it shouldn't rust

my old AP book (look for Zumdahl and Zumdahl) did a pretty good job explaining it. AP and SAT II review books also seem to cover the topic pretty well. if you have any questions...

i think energy can be considered a reactant. or at least it is treated like one in thermodynamics.

maybe try looking into AP and SAT II review books on the subject. you probably won't need the practice exams, but they have a lot of good information.

should i use -9.8m/s2 for my acceleration? and should i use the period for my time?

they must be equal?