Certifying Authority. A digital signature is an electronic form of a signature that can be used to authenticate the identity of the sender of a message or the signer of a document, and also ensure that the original content of the message or document that has been sent is unchanged.
Calculate the number of kilocalories from fat. (1 gram of fat = 9 kcal; 1 gram of carbohydrate or protein delivers 4 kcal.) Source(s): calculate number kilocalories fat: https://tr.im/12Lai.
Out of those 2,000 calories, 20% should come from unsaturated fat and 10% should from from saturated sources: 1  unsaturated fat: 2,000 * 20% = 400 calories of unsaturated fat or 44 grams. 2  saturated fat: 2,000 * 10% = 200 calories of saturated fat or 22 grams.