Answer :
Final answer:
The solution is already saturated, so no more solute can be dissolved.
Explanation:
To determine how much more solute can be dissolved in a solution, we need to calculate the solubility of the solute at the given temperature.
The solubility of NaNO3 at 30°C in water is approximately 100g/100mL. This means that at 30°C, 100 mL of water can hold up to 100g of NaNO3.
Since we have only 70g of NaNO3 in 100mL of water, we can conclude that the solution is already saturated. So, the answer is none of the options listed (a-d).
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