Recent content by Mr-Morten

I put B, but technically I can't see that any of the answers are correct. C and D are obviously wrong so that leaves A and B. With A, b isn't a paramater passed to M2, its a value returned to M1. Hence it shouldn't be in the first line as a parameter for M2. With B, a and d are both passed to...

I've got the slightly older edition so that's probably the cause of that discrepency. I think this is just something where its really hard to tell who's right, especially when (like you said) different sources say different things. Gah, i hate ambiguity

According to my Excell hsc book: " Flocculation is the addition of electrolytes... blah blah blah... Calcium hydroxide is added to adjust the pH of the water. Settling: blah blah blah" I'm pretty sure that adjusting the pH before settling helps the colloidal particles to clump together better...

Nah bromine is non-polar. For one thing the two bromine atoms in Br2 have the exact same electronegativity as each other and therefore it can't be polar (feel free to correct me if i'm wrong)

My answers were: 1 C 2 C 3 D 4 C 5 A 6 D 7 B 8 A 9 C 10 B 11 A 12 A 13 B 14 B 15 A I've checked and from what i can tell they're all right. Here's hoping *crosses fingers*

Thanks, that's what i was thinking

Hey, In the conics topic, if part of a question requires use of e.g. a tangent or a normal, are we required to derive the formula from scratch or can we just quote the standard form (e.g. x.x1/a^2 + y.y1/b^2 = 1 for the tangent to an ellipse) and go from there? I have been under the impression...