True, buoyancy is the force a fluid exerts upon an object on its surface.
The most abundant element in the Sun and in the stars are hydrogen and helium. Like most of the stars, there is a spontaneous radioactive reaction happening in the Sun. Hydrogen is transformed into Helium. As long as the stars are young, the most abundant element is hydrogen.
Answer:
Pb(No3)2+2Nacl_PbCl2+2NaNO3
Solute and solvent form a solution, which means two different kinds of molecules/atoms/compounds are mixed together, therefore, it is a mixture.
Answer:
B. The transition of heat across matter
