25ml milk is equal to 257.5g ..

haosheng (ml) is a unit of volume, and gram (g) is a unit of mass, which cannot be directly converted. It needs to be converted by the density formula m (mass) = ρ (density) ×v (volume). The density of milk is 1.3g/cm3. According to the mass density formula M = ρ× V and 1ml＝1cm3, the mass of 25ml milk is 25ml× 1.3g/cm3 = 25cm3× 1.3g/cm3 = 257.5g..

Milk and its products are one of the important sources of protein, calcium, phosphorus, vitamin A, vitamin D and vitamin B2 in the diet. Fresh milk is a complex emulsion composed of water, fat, protein, lactose, minerals, vitamins, etc., in which the water content accounts for 86%-9%, so its nutrient content is relatively low compared with other foods.

The average specific gravity of milk is 1.32, which is related to the solid content in milk. The components of milk are basically stable except for the fat content, so the specific gravity can be used as a simple index to evaluate the quality of fresh milk.

Precautions for purchasing milk

1. When purchasing milk, you should choose famous brands and formal channels

Large dairy companies usually have strict quality control systems to ensure the quality of products. At the same time, milk sold through formal channels is more secure, which can reduce the risk of buying fake and shoddy products.

2. Pay attention to the shelf life and storage method of milk

Generally speaking, the shelf life of fresh milk is short, while that of normal temperature milk is long. If you buy fresh milk, you should choose products with fresh dates and correct preservation methods. If you buy milk at room temperature, you should pay attention to its preservation method and shelf life.

3. Pay attention to the nutritional components of milk when purchasing

Generally speaking, the nutritional components of milk include protein, fat, carbohydrates, calcium and vitamins. When buying milk, you should choose products that suit you according to your own needs, such as high calcium and low fat.

refer to Baidu encyclopedia-milk for the above contents.