So this concept is kinda new to me. I used a solubility table for these and am wondering if they are right? Any help is much appreciated

1)MnS=Insoluble
2)NiCl2= soluble
3)PbSO4=soluble
4)NiS (nickel 2)= insoluble
Thanks in advance!

PbSO4 is insoluble. The others are OK. I don't know what kind of solubility table you used but I know the solubility rules. Google solubility rules and that will help you know what is soluble and what is insoluble.

To determine the solubility of different compounds, you can refer to a solubility table or use some basic rules. I can help you with that.

1) MnS (manganese sulfide): According to the general rule, most sulfides are insoluble except for those of Group 1 elements (alkali metals) and ammonium (NH4+). Therefore, MnS is insoluble.

2) NiCl2 (nickel chloride): Generally, chlorides are soluble except for those of silver (Ag+), lead (Pb2+), and mercury (Hg2+). Thus, NiCl2 is soluble.

3) PbSO4 (lead sulfate): Sulfates are generally soluble except for those of calcium (Ca2+), strontium (Sr2+), barium (Ba2+), lead (Pb2+), and silver (Ag+) ions. Hence, PbSO4 is insoluble.

4) NiS (nickel sulfide): Following the rule for sulfides, most sulfides are insoluble except for those of Group 1 elements (alkali metals) and ammonium (NH4+). Therefore, NiS is insoluble.

Based on these guidelines, your answers are mostly correct. Keep in mind that solubility can be influenced by various factors like temperature and pH, so it's always useful to consult a reliable solubility table if you have one available.