Magnesium carbonate(s) can be dissolved by the reaction shown below. If a chemist reacts 11.5 g of magnesium carbonaten, what volume of a 1.50 M HCl solution is needed to dissolve the MgCO3? MgCO3(s) + 2 HCl (aq) → MgCl2(aq) + H2O

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the positions which points up in upward carbon and down in downward carbon are axial

and vice versa holds true for equatorial positions

so the correct answer with labelled diagram will be

it would be b. 6co2 + 6h2o --> c6h12o6 + 6o2