[phoebe]

 1.  how many kilograms of magnesium oxide could be formed from the reaction of 2.70 mols of magnesuum in excess oxygen?



2 if the lead II nitrate used ws hust one half as concentrated but everything else the same, would the same graph be acquired?

3. how is the graph interpreted in light of the law of definite composition?

[sdekivit]

why don't you shuw us how far you got with your questions ?. Anyways,

2 and 3 belong to another question. With 1 you have to make the balanced reaction equation. You can then use stoichiometry of the reaction to determine the molratio between Mg and MgO.

[xiankai]

what graph are u reffering to? rate of reaction? reactants vs. products?

[phoebe]

thanks..i got already the answers...=) so far, i found the guide on the stoichomestry that your saying..thanks...