Recent content by fishes

That's embarrassing! Sorry about that.

Sorry about that, think I fixed it now

Homework Statement 1. A student investigated several esters, and made octyl acetate, an ester with the fragrance of oranges. The student used the acid derivative, acetyl chloride (as you saw decanedioyl dichloride used to make 6,10 nylon) and 1-octanol. Using the following information...

I'm a bit vary of including the load resistors (the markers are pretty strict), wouldn't their inclusion see a decrease in voltage after them? Or do they only decrease current. Could I get away with not joining the circuit and using an arrow to point out the voltage +amperage like you did for...

Thanks for all of the help. So the load resistor is used to show the voltage and amperage passing through it so that I can answer the question? Also what are the black dots connecting the cells together in the eel diagram and how come some of them are going horizontal?

Okay so I redid i) http://i.imgur.com/sZAcDjk.jpg I put in a resistor and assigned it a random ohm value of 600 which would mean the current of the circuit would be 6.66mA (4volts/600ohm) (is giving the resistor a random value what you meant when you said load resistor)? As the question doesn't...

Homework Statement i) A particular source of potential difference is capable of providing a maximum potential difference of 2 Volts. Sketch how you would connect two such sources to provide a potential difference of 4 Volts. ii) If each source can provide a current of 20 mA before its...

What's your reasoning for the rupture point being the centre? I worked out the surface area for both the rectangle (2xpix5umx2um = 63um) and the top and the bottom (157um together). I was thinking that as the side had less surface area than either the top or bottom that it would be easier for...

I got 856kpa, which converts to roughly 8.4 atm so I guess I got the right thing in the end?

Wow I need more practice, I got something completely different to that Devon and your working seems to be right.

Homework Statement In a simple model of diffusion in one dimension the quantity D can be shown to be given by half the product of the mean free path and the rms speed of the diffusing particle. Calculate the average distance a molecule of insulin will diffuse in water in one hour if its...

Sounds good but I thought that aldehydes were considered to be pretty nonpolar which would mean decanal would be nonpolar as well as its the simplest 10 carbon aldehyde?

Well if A and D are wrong for 1 I assume it's between B and E? In that case I would go with E as aldehydes are a lot more polar than alkenes?

I got the same thing as you as well Devon

Does that mean cyclohexanol isn't polar so the answer would be 1.D and 2.E ? Thanks for all the help by the way!