Correct Answer: Na2S
Reason:
The compound sodium sulfide i.e. Na2S is soluble in water. This compound gives strong alkaline aqueous solutions. On the other hand, the remaining three compounds i.e PbS, BaS and Fe2S3 are non-soluble in water. Often these compounds are also referred as sparingly soluble compounds.
Answer:
3.74 M
Explanation:
We know that molarity is moles divided by liters. The first thing to do here is convert your 1500 mL of solution to L. There's 1,000 mL in 1 L, so you need to divide 1500 by 1000:
1500 ÷ 1000 = 1.50
Now you can plug your values into the equation for molarity:
5.60 mol ÷ 1.50 L = 3.74 M
Answer:
0.03:---$7--$-$7$--$-$-$$-$+-$$7-$$-$7-$8$+$-$
