Search results

LOL.. old thread... i have the same question-- any help?

Question: Account for the difference in boiling point and melting point of alkanoic acids, alkanols and alkenes of a similar chain length. (4 mks) The strength of the intermolecular bonding in a hydrocarbon chain accounts for its boiling point & melting point. As compared to alkanoic acids &...

so how does balancing work into that ?, or is it already balanced when you divide it by 2 (for Sulphuric acid). Because, I would balance the equation normally, without considering the acids donating ability. so, does that mean we consider the donating ablity of the acid (mono, diprotic) into...

Okay, so, does that mean that whenever it is triprotic, we divide by 3, and diprotic we divide by 2 ? cuz.. in the case of Sulphuric acid- since it is diprotic, would we divide by 2? in a similar situation

Can someone explain how to do Q 14 from multiple choice, with an equation. Citric acid, the predominant acid in lemon juice, is a triprotic acid. A student titrated 25.0 mL samples of lemon juice with 0.550 mol L–1 NaOH. The mean titration volume was 29.50 mL. The molar mass of citric acid is...

Oh ok... Thanks heaps :D

Hi guys, can someone explain how to determine the answer for this Q. Which of the following aqueous solutions has a pH greater than 7? Sodium Citrate Sodium Chloride Ammonium Nitrate Ammonium Chloride The answer is Sodium Citrate, but can anyone please support it with a equation or...

Can someone please help with these Q's 1)Equal volumes of 4 different acids are titrated with 0.10 M NaOH solution @ 25 * C for complete reaction. HCN pH: 5.0 Conc L 0.17 M Ethanoic Acid pH: 3.0 Conc: 0.058 M Sulphuric acid pH: 2.0 Conc: 0.010 M Nitric acid ph: 1.0 Conc: 0.10 M...

outsourcing should be right right.. it comes under the syllabus dot-point , structural responses to change.. u can either say outsourcing, network, strategic alliance, or flatter organizational structure..

Guys... im having trouble with one of the Q's in the do-point book. Geostationary satellites orbit with a radius of 42260km. Use this information to find the period of a satellite which orbits with a radius of 15000km.. any help is appreciated :D thanks :)

yes ur teacher is right.. The end point is in regards to the experimental evidence & Equivalence point refers to ur calculations (theory). They are different because, end point depends on what u perceive to be as a colour change, and it may not correspond to the num of moles added from burete...

ohh s***, i just realized i calculate the period wrong .. thanks ! :D

2 objects on a horizontal turn table which is spinning @ 10 rpm. The object X of mass 0.2kg is 10cm from the centre and Y is 30cm from the centre of the turntable. What is the mass of Y, if the centripetal force acting on it is 12 times greater than the centripetal force acting on X. It should...

OH !! i misread the Q :angry: THANKS FOR THE HELP :D

Is the increase in atmospheric carbon dioxide has been linked to the burning of fossil fuels. The combustion of octane produces 1.554*10^7 kJ of energy per tonne off carbon dioxide produced. SNL has been proposed as a more environmentally sound source of energy. The heat of combustion of...

same :D

LOL , that goes soo well with ur DP ... and yes, if it isnt already clear from that explanation, ranks are more important :haha:

yesss.... if i was in year 12 last year, i would of used the same :D

:uhoh:

1) Find the area bounded by y= square root of ( 4- x^2) , the x-axis and the y-axis in the 1st Quadrant. 2) Find the area bounded by the x-axis, the curve y=x^3 and the lines x=-a and x=+a THANKS !