500 grams is 1 kg. 2 two is 0.2 * 500 =100g.
Rice flour refers to rice as raw material, and its nutritional components are as follows: rice contains about 75% carbohydrates, 7%-8% protein, 0/.3%-1.8% fat, and is rich in B vitamins. That is, 75g of carbohydrate (sugar), 8g of protein, 2g of fat, 5g of others, non-alcohol, and energy is ignored. That is, 75x4+8x4+2x9 = 300+32+18 = 340kcal. Including the energy of soup and other side dishes, the total energy is about 400kcal. For reference.
Heat refers to the energy transferred by temperature difference between the thermal system and the outside world. Heat is a process quantity, so heat can only be said to be "absorbed" and "released". You can't say "contain" or "have". And this transfer process is called heat exchange or heat transfer. The unit of heat is joule (j). All life activities of human body need energy, such as synthetic reaction of substance metabolism, muscle contraction, gland secretion and so on. And these energies mainly come from food. Nutrients contained in animal and plant foods can be divided into five categories: carbohydrates, lipids, protein, minerals and vitamins, and water is six categories. Among them, carbohydrates, fats and protein can release energy through in vivo oxidation. The three are collectively referred to as "productivity nutrients" or "heat sources".