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Alfi asked in Sains & MatematikaFisika · 9 years ago

fluida kelas XI tolong dong?

Dik : Vair=2000cm^3

Valkohol=1000cm^3

Massa Jenis alkohol=0,8 gram/cm^3

Massa jenis air=1 gram/cm^3

Dit: Massa jenis larutan tersebut

1 Answer

Rating
  • 9 years ago
    Favorite Answer

    V total = Vair + Valk

    V = 2000 + 1000

    V = 3000 cm^3

    m total = m_air + m_alk

    m = ro_air*Vair + ro_alk*Valk

    m = 1*2000 + 0.8*1000

    m = 2800 gr

    ro = m / V

    ro = 2800 / 3000

    ro = 0.933 gram/cm^3

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