1600cm of fresh water of density 1g/cm are mixed with 1200 cm of sea water of density 1.2g/cm’. Determine the density of the mi

Question

1600cm of fresh water of density 1g/cm are mixed with 1200 cm of sea water of
density 1.2g/cm’. Determine the density of the mixture..

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Ngọc Khuê 3 months 2021-08-12T23:56:34+00:00 2 Answers 8 views 0

Answers ( )

    0
    2021-08-12T23:58:05+00:00

    Answer:

    \boxed{\mathrm{Density = 1.1 \ g/cm^3}}

    Explanation:

    Volume of fresh water:

    Volume = Mass / Density

    Volume = 1600/1

    V_{1} = 1600 cm³

    Volume of sea water:

    Volume = Mass / Density

    Volume = 1200/1.2

    Volume = 1000 cm³

    So,

    Total Volume when they are mixed = 1600+1000

    Total Volume when they are mixed = 2600 cm³

    And,

    Total Mass when they are mixed = 1600+1200

    Total Mass when they are mixed = 2800 g

    Now, Measuring the density of the mixture:

    Density = Mass / Volume

    Density = 2800/2600

    Density = 1.1 g/cm³

    0
    2021-08-12T23:58:10+00:00

    Answer:

    \mathrm{1.086 \: g/cm^3 }

    Explanation:

    Volume of fresh water ⇒ 1600 cm³

    Density of fresh water ⇒ 1 g/cm³

    Volume of sea water ⇒ 1200 cm³

    Density of sea water ⇒ 1.2 g/cm³

    density=\frac{mass}{volume}

    mass=density \times volume

    Calculate mass of fresh water.

    m=1600 \times 1

    m=1600 \: g

    Calculate the mass of sea water.

    m=1200 \times 1.2

    m=1440 \: g

    Find the density of the mixture.

    density=\frac{mass}{volume}

    \rho = \frac{1600+1440}{1600 + 1200}

    \rho = \frac{3040}{2800}

    \rho= 1.0857...

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