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.
Calorie vs. Kilocalorie. To a scientist, a calorie is the quantity of heat (or energy) needed to boost the temperature of 1 ml of water by 1ËC. A kilocalorie (kcal, often pronounced kay-cal) is the amount of heat required to raise the temperature of 1000 ml of water by 1ËC. A kilocalorie is 1000 calories. Even though there is 1000-fold difference between these two values, calorie and kilocalorie are often used synonymously when discussing food and eating.