Answer:
moles of calcium hydroxide= 21.75 mol
a) 43.5 mol
b) 7.25 mol
Explanation:
Please see the attached picture for the full solution.
False, the radiation from food and medical procedures have very little consequences. The radiation from a nuclear power plant can kill people which makes it a very large problem if not contained properly.
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Answer: Formal Charges: Hydrogen = 0 and Oxygen = +1
Unshared Pair of electrons: Hydrogen = 0 and Oxygen = 2
Explanation:
The attachment below shows the Lewis structure and the calculations
Answer: The mass percent of hydrogen in ascorbic acid is 4.5 %
Explanation:
In
, there are 6 carbon atoms, 8 hydrogen atoms and 6 oxygen atoms.
To calculate the mass percent of element in a given compound, we use the formula:
![\text{Mass percent of hydrogen}=\frac{\text{Mass of hydrogen}}{\text{Molar mass of ascorbic acid}}\times 100](https://tex.z-dn.net/?f=%5Ctext%7BMass%20percent%20of%20hydrogen%7D%3D%5Cfrac%7B%5Ctext%7BMass%20of%20hydrogen%7D%7D%7B%5Ctext%7BMolar%20mass%20of%20ascorbic%20acid%7D%7D%5Ctimes%20100)
Mass of hydrogen = ![8\times 1g/mol=8g](https://tex.z-dn.net/?f=8%5Ctimes%201g%2Fmol%3D8g)
Molar Mass of ascorbic acid =![6\times 12g/mol+8\times 1g/mol+6\times 16g/mol=176g](https://tex.z-dn.net/?f=6%5Ctimes%2012g%2Fmol%2B8%5Ctimes%201g%2Fmol%2B6%5Ctimes%2016g%2Fmol%3D176g)
Putting values in above equation, we get:
![\text{Mass percent of hydrogen}=\frac{8g}{176}\times 100=4.5\%](https://tex.z-dn.net/?f=%5Ctext%7BMass%20percent%20of%20hydrogen%7D%3D%5Cfrac%7B8g%7D%7B176%7D%5Ctimes%20100%3D4.5%5C%25)
Hence, the mass percent of of hydrogen in ascorbic acid is 4.5 %.
Thank you for the free 15 points .