小刚想测量家中酱油的密度,但家里没有量筒,只有天平、砝码、小

小刚想测量家中酱油的密度,但家里没有量筒,只有天平、砝码、小空瓶、

水。他按照自己设计的实验方案进行了测量。

(1)请将小刚的实验步骤补充完整:

① 调节天平平衡,测量小空瓶的质量m1,并记录在数据表格中。

                                    ,并记录在数据表格中。

③ 用天平测量小瓶装满酱油的总质量m3 ,并记录在数据表格中。   

④ 根据ρ=和测量数据,计算酱油的密度,并记录在数据表格中。

(2)请写出利用测量的物理量和已知量计算酱油密度的表达

式:ρ酱油=                  

 

 

答案

解析:略

 

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