Question:

Simple equation aluminum wire reacting with excess copper (II) nitrate

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15.0 grams of aluminum wire completely reacts with excess copper (II) nitrate in solution. How many grams of copper are produced?

i tried to write the equation: 2Al (s) 3Cu(NO3)2 (aq) >> 3Cu (s) Al(NO3)3 (aq)

Then i multiplied the 15 grams by 190.65 (molecular mass of 3Cu) ans then divided that by 53.96 (molecular mass of 2 Al) and my answer was 52.99. Is my answer correct or did i make a mistake? Are my phases of matter correct? Also, is this a single replacement reaction?

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  1. 2 Al + 3Cu(NO3)2 >> 2 Al(NO3)3 + 3 Cu

    Moles Al = 15.0 g / 26.98 g/mol =0.556

    Moles Cu = 0.556 x 3 / 2 =0.834

    mass Cu = 0.834 mol x 63.546 g/mol =53.0 g

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