One thing that does not change is the chemical composition of water, which is still H2O. And maybe mass, if all of the particles remain inside the beaker, which was never mentioned in the question so I am not sure.
Answer:
Atoms with<u>2</u>or less electrons in the outermost level tend to lose electrons
A low electronegativity
Explanation:
Potassium is a metal that is expected to have a very low electronegativity value.
Electronegativity is the relative tendency by which an atom attracts valence electrons in a chemical bond.
Potassium is an element in the first group on the periodic table.
The common trend is that electronegativity increases from left to right and decreases down a group.
- Potassium as metal will prefer to lose electrons rather than attracting because that will make it achieve the octet configuration that will ensure its stability.
- This is why it will have low electronegativity.
Learn more:
Electronegativity brainly.com/question/11932624
#learnwithBrainly
C + O2= CO2
![n = \frac{m}{mw}](https://tex.z-dn.net/?f=n%20%20%3D%20%20%5Cfrac%7Bm%7D%7Bmw%7D%20)
![n = \frac{5.4}{12} \\ n = 0.45 \: mol \: of \: carbon](https://tex.z-dn.net/?f=n%20%3D%20%20%5Cfrac%7B5.4%7D%7B12%7D%20%20%5C%5C%20n%20%20%3D%200.45%20%5C%3A%20mol%20%5C%3A%20of%20%5C%3A%20carbon)
![n = \frac{13.6}{12 + 16 \times 2} \\ n = \frac{13.6}{44} \\ n = 0.31 \: mol \: of \: carbon \: dioxide](https://tex.z-dn.net/?f=n%20%3D%20%20%5Cfrac%7B13.6%7D%7B12%20%2B%2016%20%5Ctimes%202%7D%20%5C%5C%20n%20%3D%20%20%5Cfrac%7B13.6%7D%7B44%7D%20%20%5C%5C%20n%20%3D%200.31%20%5C%3A%20mol%20%5C%3A%20of%20%5C%3A%20carbon%20%5C%3A%20dioxide)
CO2 is limit
5.4-3.72= 1.68 g of C is excess
5.4 g = 100%
3.72 g = x
x=68.9 %
B I hope it’s right I don’t really help a lot but yeah lol