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Chemistry: Post your doubts here!

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Cn dere b H- bonds b/w Ch3CH2CH2NH2 molecules? Lyk the +ve H of 1 molecue to a -ve N of a diff molecule?
 
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Cn dere b H- bonds b/w Ch3CH2CH2NH2 molecules? Lyk the +ve H of 1 molecue to a -ve N of a diff molecule?
Yes it can have. Strong electronegative element N is present in other propanamine that can form H bonds with hydrogen present in the other propanamine.
 
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ok. cn sm1 tell me if the chem P5 pprs hv a format which does nt hv planning experiments lyk b4? I dnt see ques lyk tht in recent yrs so wondering if it's chnged?
 
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hi all, can somebody help me, i am looking for a revision book for ATP o level chemistry sylab:5070, thanks
 
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(ii) The partition coeffi cient of a particular pesticide between hexane and water is 6.0.
A solution contains 0.0042 g of the pesticide dissolved in 25 cm3 of water. The solution is
shaken with 25 cm3 of hexane.
Calculate the mass of pesticide that will be dissolved in the hexane layer at equilibrium
Ans is 0.0036g
 
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View attachment 61695 View attachment 61696
How do you find the conc of Ca2+ and Mg2+?
upload_2017-2-15_20-51-29-png.61706
 

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