Calculate the molar enthalpy of formation of 1 mole of PbSO4(s) from its elements, given the following equations: Pb(s) + S(s) → PbS(s) + 94 kJ/mol

PbS(s) + 2O2(g) → PbSO4(s) + 824 kJ/mol

Covalent network solids typically have melting points and boiling points. the chemical formula of a network solid indicates in the molecule.

For ai it's atomic number is 13 and it's mass number is 27 how many neutrons does it have

According to the kinetic-molecular theory, what happens to a liquid when it is transferred from one container to another? the volume and the shape stay the same. the volume increases to fill the new container, but the shape stays the same. the volume stays the same, but the shape changes to fit the new container. the volume and the shape change to fill the new container.