How many grams of O2 are produced when 0.065 mol of water decompose ?

The answer is 0.52 grams.

2H2O->2H2+O2

So, we can say that,

2 moles of water= 16 gm of O2

Then

0.065 moles of water=16/2*0.065 gm

                                   =0.52 gm

Hope you understood:)

answers: to make sure that all of the broken pieces of tablet were added to the water, to allow for fair comparison of all three trials, with different particle sizes to avoid experimental error

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