Answer: Noble gases
Explanation:
Electronegativity is the ability of an atom to gain an electron. Noble gases already have 8 electrons, so they don’t need to gain electrons. If they don’t gain electrons, it has no electronegativity.
Answer:
https://quizlet.com/199110979/biochem-chpt-5-flash-cards/
Explanation:
https://quizlet.com/199110979/biochem-chpt-5-flash-cards/
Answer:- 9.98 grams.
Solution:- The given balanced equation is:
From this equation, there is 1:1 mol ratio between methanol and formic acid. We start with given grams of methanol and convert them to moles. Then using mol ratio the moles of foramic acid are calculated and finally converted to grams on multiplying by it's molar mass.
The calculations could easily be done using dimensional analysis as:
= 
Hence, 9.98 grams of formic acid can be formed from 6.95 grams of methanol.
Answer:
0.083 moles KCl
Explanation:
We have 252 mL of 0.33 M KCl. "M" is molarity, and it's measured in mol/L. Since we know the molarity is 0.33 mol/L, in order to find how many moles 252 mL is, we need to multiply our given volume by the molarity.
However, our given volume is in mL, so let's convert to L first by dividing 252 by 1000 (because there are 1000 mL in 1 L):
252/1000 = 0.252 L
Now, we can multiply 0.252 L by 0.33 mol/L to get moles since the L units will cancel out:
0.252 L * 0.33 mol/L = 0.08316
We have two significant figures here, so round 0.08316 to 0.083.
The answer is 0.083 moles.
Hope this helps!
Answer:
How many electrons are there in the lithium ion?
The battery goes on and on and on.
Each element have an electron configuration in depending of the principle (Hund’s rule , etc).
So by their atomic number tend to indicate the number of protons that are equal in a number of electrons.
So the atomic number indicate the numbers of electrons.
Atoms have direct stability as such lithium tend to be located in group 1A and period 2.
Lithium have the atomic number of 3.
So naturally their protons/number of electrons are 3.
The electron configuration is (LI) 1s² 2s¹ or [He] 2s¹.
To archive stability as any noble gas element HE , Then the lithium will form an electron to form a Lithium ion which is Cation LI+.
So by it the lithium ion had 2 electrons.
