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Q3,22 and 37. Please with explanation.
http://papers.xtremepapers.com/CIE/...al O Level/Chemistry (5070)/5070_s03_qp_1.pdf
http://papers.xtremepapers.com/CIE/...al O Level/Chemistry (5070)/5070_s03_qp_1.pdf
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If you hold it from D it will stay stillwhy should it be at the right of c
If you hold it from D it will stay still
the point D is Thicker More weight on D side
Lets take an example a irregular object and place its middle on a pivot (you might not have that at home use an eraser) and see the way it is place a object on the part which goes up see it balancing and then hold(with your figures) the object from the part were the object was not kept you will see that it won't move that is what is know by the center of mass
This is all practical you see
Question 22 only acids react with Bases and Sodium hydroxide is a base and near 7 means 6 weak acid or 8 weak baseQ3,22 and 37. Please with explanation.
http://papers.xtremepapers.com/CIE/Cambridge International O Level/Chemistry (5070)/5070_s03_qp_1.pdf
I know you did not understand i am so sorry really bad at explainingthnx
never mind at least u helpedI know you did not understand i am so sorry really bad at explaining
can any angel help me answering Q9b)ii) of the following paper
http://papers.xtremepapers.com/CIE/Cambridge International O Level/Physics (5054)/5054_w12_qp_22.pdf
can u help me understand why volume of the air inside the balloon decreases at the surface?At the surface the volume has increased. Due to the increase in volume the molecules have more space to move about i.e. they are further apart so there are less frequent collision between the molecules and the surface of balloon so pressure is low.
And what do you mean couple of hours? Physics paper is next week
can u help me understand why volume of the air inside the balloon decreases at the surface?
Thanks!Question 22 only acids react with Bases and Sodium hydroxide is a base and near 7 means 6 weak acid or 8 weak base
answer will be weak acid!
Question 37
C_H_+502--> CO2+H20
BALANCE oxygen
C_H_+5O2->3CO2+4H2O
NOW GLANCE THE C AND H
you should have 3 C AND AND 8 H as 4*2= 8
I dunno about 3 sorry can't think now have got Bio exam tomorrow
Heyy, good luck for evryone's Bio today kaaayyyyyyy
For questions like 3, where you have a reaction with which you are not familiar. Try elimination. Let's discuss this shall we,Q3,22 and 37. Please with explanation.
http://papers.xtremepapers.com/CIE/Cambridge International O Level/Chemistry (5070)/5070_s03_qp_1.pdf
saad mughal brilliant explanation!
well advantages in the sense of usages. Well they are used in clothing, plastics, ropes etc just google some more uses if you wantWhat are the advantages and disadvantages of nylon and polyester?
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