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yeah bt we shd always round off at da final ans to get accuracy
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Physics, Chemistry and Biology: Post your doubts here!
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http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Chemistry (0620)/0620_s08_qp_1.pdf
Q15 why isnt it an endothermic reaction , markscheme says ans C how????
Q15 why isnt it an endothermic reaction , markscheme says ans C how????
A stop clock is used to measure changes throughout time. Over here, he is measuring the change in temperature, which can only be measured using a thermometer, and not a stopwatch
This reaction is a neutralization reaction. And all neutralization reactions are exothermic and not endothermic
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but there is a rise in temperatre shown wt abt dat
Exothermic reactions are reactions which release heat causing a temp rise in the surroundingsbut there is a rise in temperatre shown wt abt dat
Endothermic reactions are reactions which absorb heat from the surroundings, causing a temp drop in the surroundings
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http://papers.xtremepapers.com/CIE/Cambridge IGCSE/Chemistry (0620)/0620_s07_qp_6.pdf
Q5 part h
how do we know it was barium sulphate formed whn barium chloride also gives white ppt ????????????
Q5 part h
how do we know it was barium sulphate formed whn barium chloride also gives white ppt ????????????
but there is no reference to barium
have you posted the correct link?
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in the table part e (i) it says dat they added barium nitrate
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A
It always branches into two
For example : more than 4 legs, go to 2
4 legs or less, go to 3
dichotomous key is a key which is used to identify an organism from a group of unknown organisms by visible characteristics
It always branches into two
For example : more than 4 legs, go to 2
4 legs or less, go to 3
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An acrosome is an organelle within the human sperm cell (not sure about other organisms) that contains enzymes for fertilization when it reaches the egg to digest a pathway to the haploid nucleus
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Moment is the turning effect of force.
An object is in stable equilibrium when it doesn't turn.
An object is in unstable equilibrium when it is about to turn.
An object is in neutral equilibrium when it is continuously turning.
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I am having problem with magnetism, forces and moments. Can anyone give me any advice on how to study these topics or any useful resources related to these topics. Thank You!
b (i)
it says that for every 5.0 V applied, the spot covers 1 cm vertically
They have asked the maximum p.d applied which is equivalent to the amplitude of the wave
the amplitude of the wave is 1.5 cm which is
1.5 * 5 =7.5 V
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this question man! the 9th one please try to solve this set one! its really tough for me!
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this question man! the 9th one please try to solve this set one! its really tough for me!
View attachment 37514
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Which paper is this?this question man! the 9th one please try to solve this set one! its really tough for me!