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Ans is D. Cl mostly has an oxidation state of -1, like oxygen has -2, because they are highly electronegative atoms as the series goes F O N Cl Br... In this case both O and Cl 'pull' electrons away from Cr so they both have negative oxidation numbers.hassam said:well need help on this question......how i ll figure out valency of Cl in CrO2Cl2....???
put all the valencies and equate them to zero .. and to find the valency of sulfur put it as x .. :hassam said:SO2Cl2...how to work valency of sulfur in this compound
Saturation said:Xthegreat said:Saturation said:Number 35, I get that MgO and and BaO will form, but won't the MgO formed react with the NO2 (acidic oxide), forming magnesium nitrate? Please explain!
The answers B btw.
http://www.xtremepapers.me/CIE/Internat ... 7_qp_1.pdf
Ba is more electropositive than Mg, hence Mg cannot displace Ba.
mass of nitrogen in 14 g = 15/100 * 14 = 2.1Ash1994 said:A typical solid fertiliser for use with household plants and shrubs contains the elements N, P, and
K in the ratio of 15g : 30g :15g per 100 g of fertiliser. The recommended usage of fertiliser is 14g
of fertiliser per 5 dm3
of water.
What is the concentration of nitrogen atoms in this solution?
A 0.03mol dm–3
B 0.05mol dm–3
C 0.42mol dm–3
D 0.75mol dm–3
Think about cis-trans isomer.zwitterion7 said:Which isomer of C4H10O forms three alkenes on dehydration?
A butan-1-ol
B butan-2-ol
C 2-methylpropan-1-ol
D 2-methylpropan-2-ol
Can someone please explain how to reach the answer?
airborne1944 said:Think about cis-trans isomer.zwitterion7 said:Which isomer of C4H10O forms three alkenes on dehydration?
A butan-1-ol
B butan-2-ol
C 2-methylpropan-1-ol
D 2-methylpropan-2-ol
Can someone please explain how to reach the answer?
diwash said:@shootingstar..look there are 9 carbon double bonding in the original molecule. and after the conversion there are total of 4 carbon double bond remaining( 2 from 1st reidue and 2 from 2nd and 3rd resiude). this means 5 double bond has been removed. As we know one carbon double bond is removed byone hydrogen molecule, 5 carbon double bond is removed by 5 hydrogen molecules.
zwitterion7 said:airborne1944 said:Think about cis-trans isomer.zwitterion7 said:Which isomer of C4H10O forms three alkenes on dehydration?
A butan-1-ol
B butan-2-ol
C 2-methylpropan-1-ol
D 2-methylpropan-2-ol
Can someone please explain how to reach the answer?
I dont get it. Could you explain further, please.
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