Answer:
Hi, the given equation has some missing parts. Actual equation is- '
'
balanced equation: 
Explanation:

Balance O and H in basic medium: 
Balance charge:
........(1)

Balance charge:
.....(2)
![[equation(2)\times 4]+[equation (1)]:](https://tex.z-dn.net/?f=%5Bequation%282%29%5Ctimes%204%5D%2B%5Bequation%20%281%29%5D%3A)

is present on the left hand side of balanced equation and it's coefficient is 6
The question is asking to state the term that is often mistakenly regarded as being base on science and base on my research and further analysis, I would say that the answer would be a Pseudoscience. I hope you are satisfied with my answer and feel free to ask for more if you have question
Answer:
Both are only physical changes.
Actually, sewing an apron and dust settling out of air are both physical changes, as an apron could be unseweed by cutting the thread used, and when we disturb the dust particles, the dust particles will fet mixed back in the air so both are physical changes.
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D he predicted 3(?) new element that we're later discovered