Answer:
something that you invent?
Explanation:
Well what is the question or problem you don’t know how to do?
Answer:
The correct answer is A. 3O₂ + 2Al → 2AlO₃
Law of conservation of mass states that mass can nether be created nor destroyed in a closed system or chemical reaction i.e. the total mass of the matter always remains the same throughout the chemical or physical change.
For example, in the given reaction 3O₂ + 2Al → 2AlO₃ the total mass of the reactants is equal to the total mass of the product.
Mass of oxygen = 16 x 3 = 48 AMU
Mass of aluminium = 2 x 27 = 54 AMU
Total molecular mass of the reactants = 102 AMU
Total molecular mass of the product = 2 x 27 + 6 x 8 = 102 AMU.
Hence, the total mass of the matter remains the same.
<span>Biology is a very important thing in life it helps us understand what all other living creatures live and what they do to survive and that will lead us to ideas to help us understand about living creatures.</span>
ABI means Ankle-Brachial Index. ABI is a test used to diagnose peripheral artery
disease. The ABI compares
blood pressure in the ankle to blood pressure in the arm, shows how well blood is flowing in the
limbs and indicates if there is any or no blockage or rigid arteries. The amount of blockage establishes
the level of peripheral artery disease.
