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24 March, 08:50

If sea water has a density of 1.025 kg/L and 3.5% of the mass in sea water is salt, determine the mass of salt dissolved in 500 gallons of sea water

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  1. 24 March, 11:59
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    68 kg. There are 58 kg salt in 500 gal seawater.

    Step 1. Convert gallons to litres

    1 US gal = 3.79 L (1 Imp gal = 4.55 L)

    Step 2. Find the volume of the seawater

    Volume = 500 gal * (3.79 L/1 gal) = 1895 L

    Step 3. Find the mass of the seawater

    Mass = 1895 L * (1.025 kg/1 L) = 1942 kg

    Step 4. Find the mass of the salt

    Mass of salt = 1942 kg seawater * (3.5 kg salt/100 kg seawater) = 68 kg salt
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