I have 2 chem lab questions. the first one has tow part and I attached the experiment paper with the questions 1-what co cause the experimental wei to be(a)lower than expected (b)higher than expected (please not same explanation for both) 2-suppos the Mg used in the experiment had a thin oxide coating. how would this affect the ratio of moles of oxygen per mole of Mg (calcu quan in step 8) explain pleas full answer as short as you can please don’t si the hanf shak before being sure that you can do it right
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