Weights and measures are continual confusion to cooks: A recipe calls for three ounces and all you have is a cup measure. Or you want to buy two cups of nuts but don't know how large a can to purchase. Here is a guide, then, of weight-measure equivalents. One pound equals: 2 cups butter 2 cups granulated sugar 2 1/4 to 2 1/2 cups brown sugar 4 1/2 cups sifted confectioners' sugar 4 cups sifted all-purpose flour 4 1/2 to 5 cups sifted cake flour 3 1/2 cups unsifted whole wheat flour 5 cups oats 3 cups raisins 3 cups candied fruit and peel, chopped 2 3/4 cups sliced apples 4 cups cocoa 3 1/3 to 4 cups sliced or diced carrots 5 cups sliced fresh mushrooms 3 1/2 to 4 cups sliced or diced onions 3 1/2 to 4 cups sliced or diced potatoes 1 1/2 cups fresh tomato pulp 6 cups sliced or minced cabbage 2 cups raw rice Nuts in the shell: 1 1/4 cup almonds 1 1/2 brazil nuts 2 cups peanuts 1 3/4 cups walnuts Nuts, shelled: 4 to 4 1/2 cups almonds, pecans, peanuts, walnuts