college chemistry
posted by ashley .
if 75 g of ice at 0.0 degrees C were added to 1.5 L of water at 75 degrees C what would be the final temperature of the mixture

To melt ice requires q1 = mass ice x heat fusion.
To raise T of melted ice at zero C to Tfinal requires q2 = mass melted ice x specific heat liquid H2O x (TfinalTinitial)
To cool the water from 75C to Tfinal requires q3 = mass liquid water x specific heat x (TfinalTinitial).
Just substitute q1 + q2 + q3 = 0 and solve for Tf. 
how many molecules of h2o if formed from this equation Al2O3 + 3H2 >2Al + 3H2O

Beats me
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