①V液=7.9cm³-5.8cm³=2.1cm³
m液=12.8g-10.7g=2.1g
ρ液=m液/V液=2.1g/2.1cm³=1g/cm³
②m液1=ρ液V液=1g/cm³×5.8cm³=5.8g
m容器=m总1-m液1=10.7g-5.8g=4.9g
①V液=7.9cm³-5.8cm³=2.1cm³
m液=12.8g-10.7g=2.1g
ρ液=m液/V液=2.1g/2.1cm³=1g/cm³
②m液1=ρ液V液=1g/cm³×5.8cm³=5.8g
m容器=m总1-m液1=10.7g-5.8g=4.9g