Recent content by Procrastinate

Okay, so I have this equation: F = F1 + F2 - dF1F2 Anyways, I have the uncertainties for F1 and F2, how would I go about getting the uncertainty for F? Do I just simply add the uncertainties or do I use the formula deltaF1/F1 +deltaF2/F2 = deltaF/F? Thanks for your help.

I tried an ICE table for a buffer solution once but it gives me the same answer as the Henderson-Hasselbalch equation anyways (which is quicker to plug in all the numbers.)

Thanks. How do you know when to use an ICE table in a question?

The reaction between hydrogen and fluorine has an equilibrium constant of 1.15x102 at a certain temperature. Given the reaction equation H2(g) + F2(g) -> 2HF(g), calculate the equilibrium concentration of HF after 3.00 mol of each component is added to a 1.500 L flask. I attempted solving it...

Okay, say I want to calculate the Concentration of K2SO4 with the known concentration and volumes of 2KOH. I plug both of these numbers into the C1V1=C2V2 calculation. Would I need to divide the concentration of 2KOH by 2 in the equation like I would when doing other similar equations i.e...

Just a quick question, when calculating C1V1 = C2V2, do I need to account for Mole Rato? Say that C1 had 1 moles required in reaction as opposed to C2 which required 2 moles, would I just multiply C2 by 1/2?

I got 0.42 (approximately) but that doesn't seem like the right technique. Any other ideas on how to tackle this question? I have tried using PE and KE to figure this out but I get the same answer.

The drawing shows a skateboarder moving at 5.4 m/s along a horizontal section of a track that is slanted upward by 48° above the horizontal at its end, which is 0.4 m above the ground. When she leaves the track, she follows the characteristic path of projectile motion. Ignoring friction and air...

It would be the overall charge on an atom (after it has been ionised, so it would be called an "ion". So if you had 3 protons and 2 electrons, for example, it would be a +1 charge.

When you add all the electrons, you get a new valence electron number of 5. However, now that I think about it, I did it wrong, so it's net charge would be -3 as it would want to acquire three electrons to attain a full outer shell. I am not sure if this is right though since I never...

I know quite well how to do these. However, most of the time, the starting points are just given to me i.e. the a and b values to starting iterating. I was just wondering if you were to find a starting point for x3-x-1 = 0, what would be the best starting point to use the Ralphson-Newton...

This is probably a simple question but it has absolutely annoyed me for a week at University (yes, I know, I am still learning this, laugh away). I am meant to identify the atom/ion and the net charge of it. This is the information I am given: Protons: 9 Neutrons: 10 Electrons: 20...

I would say zero.

f(x) = -√(t(1-t)) Domain: 0≤t≥1 (from Null Factor law) Range: 0≤t However, the range was wrong. The answers said that it was -0.5≤t≥0. I have no idea where the -0.5 came from. I substituted the domain values in but i didn't work. It just came out with zero. Can anyone suggest any ideas...

The answer was one minute and I got an 2.34 hours (my mistake.) I'm not sure what to do now...