Answer:
C) 301.8
Explanation:
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In this case, since the solution is composed by water and salt, the total resulting mass comes up from adding the mixed mass of each one:
[tex]m_{sol}=m_{w}+m_{salt}[/tex]
Thus, we plug in to obtain:
[tex]m_{sol}=200.4g+101.42g\\\\m_{sol}=301.8g[/tex]
Therefore, the answer should be C) 301.8 as it has four significant figures.
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