31) A renewable resource is qualified as things like, Solar, Wind, Hydro-electric, and thermal.
A non-renewable source can be like coal, trees, Gasoline (oil), and petroleum.
32) I don't know what you mean, sorry.
33) Convection Currents cause the plates to move, sometime these currents cause the plates to collide, therefore creating an ... EARTHQUAKE.
The answer for The question is (D)The density changed
If it is just a simple double-replacement reaction, then the balanced equation is simply:
Pb(ClO3)2(aq) + 2 NaI(aq) = PbI2 + 2 Na(ClO3)
However, if this is a precipitation reaction, we must identify which compound will precipitate (is insoluble), either NaClO3 or PbI2
NaClO3 is soluble, PbI2 is not. Only the lead cations and iodine anions will participate in the reaction.
thus, the balanced equation is: Pb^(2+) + 2I^(-) ==> PbI2
1. 200/2=100. 100/2=50. 50/2=25. So that's 3 to get to 25.
2. 11.46/3=3.82
The answer is (2).
low melting point means that a low amount of heat is required to melt said substance.
