Answer:
C: The atomic nucleus contains most of the mass.
The branch of science that deals with the identification of the substances of which matter is composed
you can learn by reading about it or google it
Answer:
The magnesium reacts with the acid, producing visible bubbles of hydrogen gas.
Explanation:
Optional) If the flame of a butane fireplace lighter is held above the bursting bubbles, they will produce audible pops as the hydrogen ignites. Magnesium ribbon is a flammable solid. Hydrochloric acid is a corrosive liquid. Hope this helps :).
Whenever it's asking about the formation of a precipitate, you should not consider the solid form in the reactants, only in the products
BaSO4 (s) + Na2CO3 (aq) --- > BaCO3 (s) + Na2SO4 (aq)
so i think barium carbonat is the precipitate
hope this helps
Answer: Solid
Explanation: Solids are closely packed together so they can not be compressed and have a definite shape.
