Answer:
I believe the answer is A. it could be A or D. But I trust A. sorry if i'm wrong
All chemical reactions follow the law of conservation of mass. This means that the number of atoms of a specie before the reaction must equal to the number of atoms of that specie after that reaction. The only change that occurs in chemical reactions is the breaking and formation of chemical bonds, due to which energy may be released or absorbed.
Here we have to get the moles of water generated by the combustion of vitamin C.
4 moles of water (H₂O) will generate from the combustion of vitamin C.
The vitamin C is the ascorbic acid having the molecular formula C₆H₈O₆. On decomposition it produces water (H₂O) and carbon di oxide (CO₂).
The molecular weight of ascorbic acid is 176.12 g/mole.
In this analysis 0.163g of H₂O produces from 0.400g of vitamin C.
Thus from 176.12 g of vitamin C ×176.12 = 71.768 g of H₂O will produce.
The molecular weight of H₂O is 18 g/mole. Thus 71.768 g is equivalent to = 3.98 ≅ 4
Thus 1 mole of vitamin C (ascorbic acid) produces 4 moles of water on combustion.
The balanced combustion [in presence of excess oxygen (O₂)] reaction can be written as- C₆H₈O₆ + 5O₂ = 4H₂O + 6CO₂.
Thus the moles of water generated from combustion of vitamin C is determined.
Chlorophyll is a green molecule found in plants that absorbs sunlight during photosynthesis and converts it to energy. It's been said to help with blood detoxification, odor control, wound healing, gut health, energy, immune system support and cancer prevention.
The number of electrons in the outermost shell of an atom determines its physical and chemical properties. All elements are most stable with 8 electrons (an octet) in their outer shell.
Hope this helps!!