The electrons in the highest occupied energy level of an atom are called valence electrons.
ans C) pH5 to pH3
as concentration increases, while pH decrease
Answer:
atoms of different elements combine and form new elements
In a simplified version, check the number carbon atoms present and multiply by its relative atomic mass. Later divide by the given mass (4.5 x 1000 = 4500g) and you’ll get the number of mole of carbon
