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Chemistry: Post your doubts here!
i wish all the best to everyone;) -
Chemistry: Post your doubts here!
On collision, airbags in cars inflate rapidly due to the production of nitrogen. The nitrogen is formed according to the following equations. 2NaN3 → 2Na + 3N2 10Na + 2KNO3 → K2O + 5Na2O + N2 How many moles of nitrogen gas are produced from 1 mol of sodium azide, NaN3? A 1.5 B 1.6 C 3.2... -
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Chemistry: Post your doubts here!
The standard enthalpy changes of formation of iron(II) oxide, FeO(s), and aluminium oxide, Al2O3(s), are –266kJmol–1 and –1676kJmol–1 respectively. What is the enthalpy change under standard conditions for the following reaction? 3FeO(s) + 2Al(s) 3Fe(s) + Al 2O3(s) A +878kJ B –878kJ C –1942kJ... -
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Chemistry: Post your doubts here!
Q32 sorry .... angelgirl ...im not getting th answer -
Chemistry: Post your doubts here!
http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Chemistry%20(9701)/9701_s10_qp_11.pdf -
Chemistry: Post your doubts here!
me neither trying frm long!!o_O -
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Chemistry: Post your doubts here!
Which ion is most polarising? A Al3+ B Ba2+ C Mg2+ D Na+ wht do u mean by pol arising?:confused: -
Chemistry: Post your doubts here!
ok for this q ... i dont noe why A is the answer but B cannot be as if u ass chloride ions ..... it needs a supply of oxygen and cannot form ClO- ion -
Chemistry: Post your doubts here!
the qs is not clear angelgirl... -
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Chemistry: Post your doubts here!
will do inshallah.... do the same 4 me:) -
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Chemistry: Post your doubts here!
if there are diagrams in the Q... then just post Q no an d the ppr ur solving.. ok