Answer :
Final answer:
The mass of SnCl2 in the given solution is 1.11 mg.
Explanation:
To calculate the mass of SnCl2 in the given solution, we need to first convert the concentration from ppm to mg/L. ppm stands for parts per million, which means there are 36.9 mg of SnCl2 for every 1 million mg of solution. Convert 1 million mg to 1 L by multiplying by 1000 (since 1 L = 1000 mL) and divide by 3 (since we have 3 L of solution). This gives us 1,100 mg/L, which is equivalent to 1.11 grams per L. Therefore, the answer is (A) 1.11 mg.