1, the weight of one egg is about 50g, and forty eggs are about 2kg.
The weight of a bottle of mineral water is 500ml, and four bottles of mineral water are 2kg.
The weight of one bag of pure milk is about 200g, and that of ten bags of pure milk is about 2kg.
The weight of a fourth-order Rubik's cube is about one hundred grams, and twenty Rubik's cubes are about two kilograms.
5. One bottle of shampoo is 400 ml, and five bottles of shampoo are 2 kg.
The kilogram is a metric unit of measurement, and one kilogram is equal to one kilogram, which is equivalent to two kilograms in China.
The mass units of the meter, kilogram and second system in the international system of units are also one of the seven basic units of the international system of units. After the French Revolution, it was formulated by the French Academy of Sciences.
Originally intended to be a newly issued standard device gram, the main unit of quality. However, due to the limitation of technology and measurement technology at that time, a standard device with the mass of 1000 times of gram was made, that is, the kilogram standard original device, which is also the reason why the mass unit in the international system of units is kilogram instead of gram.