Answer:
True
Explanation:
This is the true statement .
Because There are two types of metal coagulants used : aluminium and iron.
The aluminum coagulants include aluminum sulfate, aluminum chloride and sodium aluminate.
The iron coagulants include ferric sulfate, ferrous sulfate, ferric chloride and ferric chloride sulfate.
Mass number (A) =protons (p+) + neutrons(n°)
Answer:
The pollution can cause resources to lessen.
As you move from left to right of the periodic table, the element becomes more negative.