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Chemistry: Post your doubts here!
The products obtained by cracking an alkane, X, are methane, ethene and propene. The mole fraction of ethene in the products is 0.5. What is the identity of X? A C6H14 B C8H18 C C9H20 D C11H24 how do u get the answer? -
Chemistry: Post your doubts here!
Concentrated sulfuric acid can behave both as a strong acid and as an oxidising agent. With which compound does concentrated sulfuric acid react in this way? A ethanol B magnesium carbonate C propanenitrile D sodium bromide why D why not A??? -
Chemistry: Post your doubts here!
Use of the Data Booklet is relevant to this question. Which element is likely to have an electronegativity similar to that of aluminium? A barium B beryllium C magnesium D strontium why is it B....how? -
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Chemistry: Post your doubts here!
i think C is right and that is bcoz......to find this there is a way..... the formula is 2^(no of double bonds)....in thsi question... double bonds=3 so 2^3=8 and so =3 C is the ans .... im guessing -
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Chemistry: Post your doubts here!
The esterification reaction ethanol + ethanoic acid --> ethyl ethanoate + water is an equilibrium. The forward reaction is exothermic. How can the value of the equilibrium constant KC be increased? A by adding a little concentrated sulfuric acid as a catalyst B by increasing the initial... -
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Chemistry: Post your doubts here!
thxx a lot... u cleared my doubt ....thx for the detailss:) -
Chemistry: Post your doubts here!
Ammonium nitrate, NH4NO3, can decompose explosively when heated. NH4NO3 → N2O + 2H2O What are the changes in the oxidation numbers of the two nitrogen atoms in NH4NO3 when this reaction proceeds? A –2, –4 B +2, +6 C +4, –6 D +4, –4 -
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Chemistry: Post your doubts here!
maybe because... h-16 and mass of oxygen (if u check in the periodic table) is 16 (mass) so they have equal masses ...i mole of O and 16 H im nt sure though -
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Chemistry: Post your doubts here!
The density of ice is 1.00gcm–3 . What is the volume of steam produced when 1.00 cm3 of ice is heated to 323 °C (596 K) at a pressure of one atmosphere (101kPa)? [1mol of a gas occupies 24.0dm3 at 25°C (298K) and one atmosphere.] A 0.267dm3 B 1.33dm3 C 2.67dm3 D 48.0dm3 please help me... -
Chemistry: Post your doubts here!
dont take the double bond C as the chiral centre...... take the second carbon as the chiral centre...the for different groups are.... Br,H,CH=CH2,and CH3 -
Chemistry: Post your doubts here!
i guess tht explains my doubt....... thxx a lot :) -
Chemistry: Post your doubts here!
4 The equation below describes the equilibrium between propan-2-ol and propanone in the gas phase. CH3CH(OH)CH3(g) → CH3COCH3(g) + H2(g) propan-2-ol propanone Which one of the following statements about this equilibrium is correct? A Increasing the pressure decreases the... -
Chemistry: Post your doubts here!
i dint get 29.... but got 30 30 30 Which compound exhibits both cis-trans and optical isomerism? A CH3CH=CHCH2CH3 B CH3CHBrCH=CH2 C CH3CBr=CBrCH3 D CH3CH2CHBrCH=CHBr a compound which contains both optical isomer ( a C compound with 4 different group, a chiral centre) and a cis-trans...