Recent content by qwedsa

^i don't think volume is meaningless, the balloon can expand or shrink even with that opening at the bottom, so volume is defined in terms of the balloon

i defined them in terms of the strength of intermolecular forces. not ill-defined at all yes, I'm sorry, i forgot that we are dealing with ions, not molecules well it was nearly word for word from the solubility section of my chem textbook, it's not incorrect again, i forgot about the ion...

But we are supposed to assume a constant pressure according to the question if the pressure is constant, the only variable changing as the hot air balloon rises, would be it is getting colder, which means less volume

as the hot air balloon rises, temperature gets lower, right? as temperature drops but all other variables stay the same, volume must drop berkeman why do you say the volume increases? what am i missing?

with solubility, remember that like dissolves like (in terms of intermolecular forces) BaSO4 is quite similar to Na2SO4 but quite different from H2O (water has hydrogen bonding) so BaSO4 will be less soluble in water --- to understand why like dissolves like, consider a flask with two...

A) if the head is 0.5 nm, and the lipid exchanges places every 10E-7s, then it is moving at 0.5nm per 10E-7s, or 5E-4 m/s (convert .5 nm to meters, divide by seconds, to get its velocity) if it takes 1 second to travel 2 micrometers, then it travels from one end of the bacterium to the...

1. the equilibrium will not shift, because while the total pressure will raise, the concentrations will still be the same (the same amount of mols of each gas per volume) since the volume did not change 2. it will shift to the left. there are 4 mols of gas on the left, and 2 mols of gas on...

Kc = [CO]^2/[CO] reduces to Kc = [CO] assuming 100g total, and 90.55g CO (30.18 mol), we need to find volume and then the answer will be 30.18mol / volume we can use PV=nRT to find the volume PV = nRT V = nRT / P we know temp, pressure, R, but we got to find n n = total moles...

^your equation for x seems correct. i rearranged it to 0 = 5.72/x - 5.007 + x we need to find the zeroes when graphed, the zeros are 1.76 and 3.24 if we use 3.24, we would have a negative concentration of both CO and NH3, which is physically impossible. so, we go with 1.76 so the...

Homework Statement The reaction: CO + Cl <-> COCl2 has the rate law: rate = k[CO][Cl2]^(3/2) Show that this rate law is consistent with the mechanism: Cl2 <-> 2Cl (fast) Cl + CO <-> COCl (fast) Cl2 + COCl -> COCl2 + Cl (slow) (i don't know how to do superscript and subscript on...

i just did this problem on my homework we have ln( k2/k1 ) = (Ea/R) * (1/T1 - 1/T2) where k is the reaction constant, Ea is activation energy, R is gas constant, T is temperature what are we solving for? well we want to see how k changes. we rearrange the equation: [antilog of both...

angular momentum. if you throw a bunch of rocks together and make a planet, it won't be sitting still, itll be spinning and travelling

dont know why this was moved here, it wasnt hw, I'm not even in physics

someone on another forum (BL) gave me this handy equation: crit_velocity = sqrt( 2*G*m1 / dist ) where m1 is the mass of hte heavier object. note, this only works if hte mass of the lighter object is much much lighter than the heavier object if the velocity of the lighter object is...

^hey complex. i didn't know there was the term 'orbital velocity' googling this term should give me everything i need, thanks