It depends what you mean by ounces. There are fluid ounces which measure volume. One cup is 8 fluid ounces. Ounces is also a measurement of mass. If you are talking about volume (fluid ounces), then 3/4 cup of chocolate equals 6 oz. If you are talking about the mass of the chocolate then you have to determine the density (mass per unit volume) of the chocolate and do some more math.
just chop/grind squares into small bits... then measure... or use a displacement method... 2 cups chips with air pockets/spaces between probably about 1 1/2 cups solid chocolate when melted. take a full glass of water, pour out 1 1/2 cups, then add chocolate squares till water fills glass to top...
em well 120
86 semi-sweet chocolate chips equals 3 squares of semi-sweet baking chocolate.
Each square of chocolate equals one ounce.
one bag is 12 onces
approximately 1.5 cups
450 grams of chocolate chips is about two and a half cups
A little over six and a half cups, if my calculations are correct.