The answer states that this recipe needs 0.055 moles of sodium bicarbonate.
Cakes, cupcakes, and cookies are baked foods that contain baking soda as a leavening agent. It is a white, powder that is innately basic or alkaline and is formally known at sodium bicarbonate. When mixed with an acidic component and a liquid, sodium bicarbonate is activated.
We know,
Molecular weight of Baking Soda is 84gm (moles)
Now requirement = 4.6gm
So, moles required = 4.6/Mw
= 4.6/84 = 0.0548 moles ≅ 0.055 moles
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