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1.用天平和量筒用天平测量物体的质量,用量筒测量物体的体积,由密度公式ρ=m/V计算即可.例1在实验室里用天平和量筒测量某种液体的密度,操作步骤如下:(1)用已经调好的天平测量出一只空烧杯的质量是25g.
1. Use a balance and a graduated cylinder to measure the mass of the object and a graduated cylinder to measure the volume of the object. Calculate the density formula ρ=m/V. Example 1 Use a balance and a graduated cylinder to measure the density of a liquid in the laboratory. The steps are as follows: (1) Measure the mass of an empty beaker with an already adjusted balance of 25 g.