Calculate the number of moles of potassium chlorate, ....?

Calculate the number of moles of potassium chlorate, KCLO3(s) that must decompose to produce potassium chloride, KCL(s) and 1.80 moles of oxygen gas.





Our teacher requires us to show work(step 0: balanced equation, 1: grams-moles, mole ratio and 3: moles: to grams so plz. include steps if you can. thanks

Calculate the number of moles of potassium chlorate, ....?
2KClO3(s) --%26gt; 2KCl(s) + 3O2(g)





divide the equation by the moles of the substance you are given as a know (O2)





2/3KClO3(s) --%26gt;2/3KCl + O2(s)





this says for every mole of O2 produced 2/3 mole of KClO3 was required





so if you have 1.8 moles O2





then you need ==%26gt; 1.8 * 2/3 moles KClO3 = 1.2 moles KClO3
Reply:The balanced equation is :


2 KClO3 %26gt;%26gt; 2 KCl + 3 O2


the ratio between KClO3 and O2 is 2 : 3


moles KClO3 needed = 1.80 x 2 / 3 = 1.20

camellia