100 grams of baking soda to cups
100 grams of baking soda is 0.45 cups — near enough 1/3 cup + 2 tbsp.
The answer
0.45 cups
≈ 1/3 cup + 2 tbsp
Worked out from 220 grams per US cup: 100 ÷ 220 = 0.45. Approximate — density shifts with packing and brand.
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Based on g per cup. Approximate — density varies with packing and brand.