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Chemistry MCQ thread...
could be :P but i have seen some questions which dont have acurate answers and u have to aproximate it .. -
Chemistry MCQ thread...
yeah .. some questions have answers of approximation .. -
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Chemistry MCQ thread...
good that u understood it.. and googles the best ! i sometimes copy paste whole questions and it shows me in results if some is talking on that question on some forum ! -
Chemistry MCQ thread...
@kshumaila ur right .. straight line will represent a direct relation with only the gradient negative or positive. -
Chemistry MCQ thread...
yes . a straight line represent a direct relationship and a curve represents a inverse relation -
Chemistry MCQ thread...
because a straight line shows a direct relation .. -
Chemistry MCQ thread...
the graph for inverse proportion is always a curve .. because i think there is a limit when the curve becomes horizontal .. but a straight line would cut the x-axis .. but the presure cant be zero right ? thats my logic for why it cant be a straight line .. but i do know that for every inverse... -
Chemistry MCQ thread...
P and v are inversely proportional to each other and it should decrease but with a curve . not a straight line . -
Chemistry MCQ thread...
@kshumaila52 the moles of water as a liquid and as a gas would be the same for that ice cube .. so thats why i multiplied it by 24 .. because in real i was multplying the moles of gas by 24 .. -
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Chemistry MCQ thread...
yes i also got 2.67 with this formula .. but u check my working .. hope u understand that . :) -
Chemistry MCQ thread...
well i tried to do it by that formula ... but couldnt understand for a long time .. but my teacher explained it to me with this formula . and this formula makes it quite easier and less time consuming once u get it .. -
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Chemistry MCQ thread...
we cant use pv=nrt in this . we use v1/T1 = v2/T2 the initial vol =v1. the mass of ice cube is 1 (mass= density* vol) thus the moles of the water in ice cube would be 1/18. the initial vol = moles * 24 = 1/18 *24 =1.333 the initial temp is rtp =298 the final temp is 596 so put in the formula... -
Chemistry MCQ thread...
@mssamgirl i only looked at different variants for june papers and saw it was only mixed up .. so assumed the same for the nov papers ..:P