Answer: B
Explanation: the 3 in Na3PO4(s) belong to the sodium atom (Na). so in any of these equations, the 3 would have to be with Na.
A- the 3 is along w the PO4, which would make it part of that bond
C- there is no 3 at all for Na in this choice, making it incorrect
D- Again, the 3 is placed on the other half of the bond
Answer:
C. The point of contact between the skates and the ice
Explanation:
That is the only point of friction with the ice that provides the ability to complete the move.
Because the molecules are more closely spaced, the solid occupies less space than the same substance when it is in a gaseous state.
I think that pressure will affect the solubility of gasses the most. The reason why I think this is that gasses are affected the most by pressure change. By definition solids and liquids are not easily affected by pressure by how close the molecules are to each other in both of those phases.
I hope this helps. Please let me know if you have any further questions or need any clarification.
The SI unit of temperature is called a Kelvin. :)
