Answer:
Between oxygen and selenium, oxygen is more electronegative because of more ionisation energy and small size
Explanation:
Answer:the ability to be dissolved, especially in water.
Explanation:
The kind of thermochemical equation represented below
that is
CaO(s) + H2O (l) = Ca(OH)2 (s) +65.2 kj
is exothermic ( answer B)
This is because its heat energy has a + sign meaning that heat is released by the reaction above.
N is as electronegative as Cl is. So Cl doesnt react with O, N
You could use distillation.
Hope this helps
