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How many grams of solid thallium at 248°C can be converted to liquid Tl at 351°C if 44.1 kJ of heat are applied? Specific heat capacity of solid Tl = 0.503 JK-1g-1 (0.503JK^-1g^-1) Specific heat capacity of liquid Tl = 0.717 JK-1g-1 Heat of fusion (per gram) = 20.9 Jg-1...

Which one of the following elements would have the lowest melting point? a) Kr b) Br2 c) S8 d) Ca e) K Is the answer a? Not sure... just want to check with someone. For Br2, is there any difference? I mean, is the melting point the same as Br or doubled? Thanks

1) Which one of the following elements would have the lowest melting point? a) Kr b) Br2 c) S8 d) Ca e) K 2) Which of the following molecules can participate in intermolecular hydrogen bonding? (i) NH3 (ii) CHCl3 (iii) HCl (iv) CH3OH a) all of these b) I and IV only c) II...

what factors will affect the speed of diffusion?? Thanks

Hey. I'm using my brother's account. Just wondering.. is there a 2006 0-week wagga wagga bus timetable at the website to download? I can't seem to find it or can anyone provide a link for me to access it thanks.

Hey anyone actually taking honours of pharmacy? I can't remember my user account to log in so im using my lil brother's account lol. I was just wondering, for those u who completed b. medical science at any institution. i heard it is possible to be offer to study master of pharmacy since u...

Anyone studying medical science at UTS? How are the facilities there? Is it good? Also, job prospects.

Just wondering (seems a good idea to post here), my sister has completed one year of B. Medical Science at UNSW with a GPA of 5 and wants to transfer to second year entry of B. Medical Science at USYD. Do you think this is possible? Thanks.

mmm... need help with these questions. I don't know how to begin the question.. i have no idea how to answer them! Please provide some feedback. Thanks :) See attachment below.

There's no answers for these questions and any help would be much appreciated. See attachment.

Hello... just need someone to check my answers for these questions below. Thanks :) Integrate: 1) xsinx dx 2) cos √x / √x dx 3) lnx / x dx These are the answers what i got: 1) -1/2 cosx/ x + c 2) 2(sin√x/ √x) + c 3) (ln x) / 2 + c

Hey im stuck with this question... any help would be greatly appreciated. Use the terms allele, gene, natural selection, fitness, speciation in a paragraph describing the evolution of: A) a Galapagos marine iguana from a mainland green iguana and B) the differentiation into species of a...

1) Simplify: e^ln(x) - ln(e^x) is ln(e^x) = x? how? 2) Consider the linear function f(x) = a + bx where "a" is a real number and "b" is a nonzero real number. a) If the inverse of "f" is "g" such that g(x) = c + dx, find c and d in terms of "a" and "b". b) Can you find all linear...

Solve for y in terms of t: ln (y-1) - ln2 = t + lnt --> I had a different answer: y = 2e^t + 2t + 1 Ans should be: y = 2te^t +1

In distillation, would increasing the heating rate affect the boiling point? Why? Explain in terms of vapour pressure and the pressure of the laboratory.

Plz... need help with these questions. I keep on getting them wrong. Indicate the types of intermolecular forces (there may be more than one) present in: a) CH3CH2NH2 b) NaOH c) Na Cl ion- ion d) H2O dipole- dipole, hydrogen bonding e) CH3COOH (acetic) f) CH3COCH3 (acetone) g)...

Hey... i got questions from the lab manual that i'm stuck on. Any help would be great. 1) Referring to Rf values of pigments, what do the Rf values of various pigments tell you about their relative polarity? 2) In my experiment, there were no pigments shown in the dark reaction of...

I felt so stupid asking this question lol. I know the definitions for these terms but i'm still vague. Anyone please provide examples for these terms? I can't find it in the prelim textbook.