Answer:
<u>0.035 grams</u>
Step-by-step explanation:
<u>Grams of salt per gram of ocean water</u>
- Divide the amount of salt by amount of water
- 525 g / 15 kg
- 525 g / 15000 g [∴1 kg = 1000 g]
- 0.035 / 1
For every gram of ocean water, there is <u>0.035 grams</u> of salt dissolved in it.
Here it is
67^2 = 67*67 = 4489
The quantity of the radioactive material which would remain 2 years from now is; 4 grams.
<h3>What is the quantity remaining in 2 years?</h3>
Since, it follows from the task content that after two year, the quantity of the radioactive substance decrease by 1 gram. Consequently, it follows from proportion that the quantity remaining in 2 years from now is; 5-1 = 4 grams.
Read more on radioactive material;
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