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Answer 1 · 2017-07-07T10:26:24

Density of the final mixture is 1133 $(kg)/m^3$

You need to compute final density. When you mix two different compounds:

$(V_1timesd_1) + (V_2timesd_2) = (V_1 + V_2)timesd_(mixture)$

$(1times1) + (2times1.2) = 3timesd_(mixture)$

Note that 1000 $(kg)/m^3$ is the same as 1 kg per liter. The density of brine is therefore 1.2 $(kg)/L$ .

Final volume is 3 liters because you indicated that there is no volume change when these two are mixed well.

You can solve the above equation:

$1 + 2.4 = 3timesd_(mixture)$

$3.4/3 = d_(mixture)$

$d_(mixture) = 1.133 (kg)/L$

or density of the final mix is 1133 kg per cubic meter.