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dlinn [17]
3 years ago
9

What is an ion? what is a valence electron? how is an ion formed?

Chemistry
2 answers:
Anna35 [415]3 years ago
8 0

Answer:

Ions are formed when atoms lose or gain electrons in order to fulfill the octet rule and have full outer valence electron shells. When they lose electrons, they become positively charged and are named cations. When they gain electrons, they are negatively charged and are named anions.

Explanation:

Alex787 [66]3 years ago
5 0

Answer:

An ion is a particle with a positive or negative charge. A valence electron is an outer shell electron that is associated with an atom.

Explanation:

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Find the ph of a buffer that consists of 0.18 m ch3nh2 and 0.73 m ch3nh3cl (pkb of ch3nh2 = 3.35)?
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First, we need to determine the pKa of the base. It can be found applying the following equation:

pKa=14-pKb=14-3,35=10,65

Now, we can apply the Henderson-Hasselbach's equation in the following way:

pH=pKa+log( \frac{[CH_3NH_2]}{[CH_3NH_3Cl]} )=10,65+log( \frac{0,18M}{0,73M} )=10,04

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3 years ago
What is the percent of hydrogen by mass in HNO3? (Molar<br> mass of HNO3 = 630 g/mol)
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This compound is also known as Nitric Acid.

Convert grams HNO3 to moles or moles HNO3 to grams

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