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rodikova [14]
3 years ago
10

There are two main ways that minerals are classified. Which identifies those two main ways?

Chemistry
2 answers:
MAXImum [283]3 years ago
6 0
A mineral is a naturally occurring inorganic crystalline solid that are the building blocks of rocks. Rocks are made up of different minerals. The most appropriate answer is c. crystal structure and economic value. Some minerals are classified as semiprecious or precious because of their economic value.  Minerals such as diamonds and emeralds are precious and are very valuable. 
prohojiy [21]3 years ago
6 0

Minerals are classified based on their physio chemical properties

The chemical properties are related to crystal structure

physical appearance  of mineral defines its cost

so the minerals are classified based on crystal structure and economic value

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Answer:

a. Minimum 1.70 V

b. There is no maximum.

Explanation:

We can solve this question by remembering that the cell potential is given by the formula

ε⁰ cell = ε⁰ reduction -  ε⁰  oxidation

Now the problem states the cell must provide at least 0.9 V and that the reduction potential of the  oxidized species  0.80 V, thus

ε⁰ reduction -  ε⁰  oxidation ≥  ε⁰ cell

Since ε⁰  oxidation is by definition the negative of ε⁰ reduction , we have

ε⁰ reduction - ( 0.80 V )  ≥  0.90 V

⇒ ε⁰ reduction  ≥ 1.70 V

Therefore,

(a) The minimum standard reduction potential is 1.70 V

(b) There is no maximum standard reduction potential since it is stated in the question that we want to have a cell that provides at leat 0.9 V

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3 years ago
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