Because noble gases already have full shells of electrons therefore meaning they do not need to react to form anything.Whereas if they had 1 electron short of full shells , they would become VERY reactive.
Answer:
True
Explanation:
Hello,
As long as the group VIA elements have 6 valence electrons (electrons at the outermost shell) they just need two electrons to attain the octate, it means that the resulting charge must be -2. In such a way, since VIIA elements have 7 valence electrons, they just need one electron to attain the octate, it means that the resulting charge must be -1.
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Answer:
B. A chemical change occurred which caused the liquid's physical properties to change.
Explanation:
The reduction of the temperature of the system meant that the reaction absorbed heat energy from it. This shows that a chemical reaction was in progress. New products were formed, and this is proved by the change in the color to blue.
Here is what Golgi looks like, so that you can look at the picture and describe it.
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Glad I could help, and good luck!
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2KCl = 2K + Cl₂
v(K)=69.9 ml
p(K)=1.78 g/ml
M(K)=39.1 g/mol
M(KCl)=74.6 g/mol
1) m(K)=v(K)p(K)
2) m(KCl)=M(KCl)m(K)/M(K)
3) m(KCl)=M(KCl)v(K)p(K)/M(K)
m(KCl)=74.6*69.9*1.78/39.1=237.39 g