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mote1985 [20]
3 years ago
5

Which method of moving materials in and out of the cell requires energy.

Chemistry
2 answers:
Vikki [24]3 years ago
8 0
<span>active transport i think
</span><span> 

</span>
kkurt [141]3 years ago
6 0
The answer is active transport
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DENIUS [597]

Answer:

b. 760 g

Explanation:

The mass of the solution = 800 g

5% of NaCl by mass of the solution can be determined as follows;

    5% of 800  =  \frac{5}{100} × 800

                       = 5 × 8

                       = 40 g

The mass of NaCl in the solution is 40 g.

The mass of water = mass of solution - mass of NaCl

                               = 800 - 40

                              = 760 g

Therefore, the mass of water required is 760 g.

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