CHEMISTRY! NEED HELP FAST!
posted by Curry .
if 250 ml of oxygen at stp are consumed when magnesium burns, how many grams of magnesium oxide? [Mg(s) + O2(g) ---> MgO(s)]
How many mols O2 were consumed? That's 0.250 L x (1 mol/22.4L) = ? mols O2.
Use the coefficients in the balanced equation to convert mols O2 to mols MgO.
Now convert mols MgO to g. g = mols x molar mass.
i can't find the answer can u show me how to do the work step by step and tell me the answer my homework is due tomorrow