You have to make an assumption or estimation here: (don't think about the 1.00 M KSCN) Since 1.00M KSCN provides a common ion source of SCN-. Therefore, you will have a <span>1.00 M SCN-. </span><span>[Pb+2][SCN-] ~ 0.01 x 0.02^2 = 4E-6 </span> Pb(SCN)2 <---> Pb++ + 2SCN- <span>
</span>Bringing 1.00M SCN- back in the problem. 1.00M + 0.02M, ignoring the SCN-, and calculating the <span> [Pb+2]: </span><span> </span><span>Ksp = [Pb++][SCN-]^2 </span>2.00E-5 = [Pb++](1.00)^2
Alloys are supposed to give greater strength to metals, which is why gold is mixed with others to make it harder. They have greater strength and are more resistant to erosion.
I believe that crude oil is derived from plants because it is made up of a liquid that is found beneath the earth surface so I guess you could go with plants it is not an animal or rock or salt so.. could be brainliest not 100% sure so if you are not sure go with your gut
