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jonny [76]
2 years ago
11

In which pair of elements are both metalloids?

Chemistry
2 answers:
Aleksandr [31]2 years ago
3 0

Answer:    

Sb and Te

Explanation:

there are on the stair step

IrinaVladis [17]2 years ago
3 0
Sb and Te they are on like the stair part of the table
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Write balanced chemical equation for the reactions used to prepare each of the following compounds from the given starting mater
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Explanation:

A balanced chemical equation is defined as the one that contains same number of atoms on both reactant and product side.

Whereas a chemical reaction that brings change in oxidation state of the reacting species is known as a redox reaction.

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(a)   The reaction between nitrogen and hydrogen to form ammonia will be as follows.

                N_{2} + 3H_{2} \rightarrow 2NH_{3}

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Reaction between ammonia and nitric acid will be as follows.

            NH_{3} + HNO_{3} \rightarrow NH_{4}NO_{3}

Since, it is a combination reaction. Therefore, no change in oxidation state of reacting species is taking place.

(b)  Reaction for conversion of liquid bromine to hydrogen bromide is as follows.

            H_{2}(g) + Br_{2}(l) \rightarrow 2HBr(g)

Here, oxidation state of hydrogen is changing from 0 to +1. Therefore, oxidation of hydrogen is taking place. On the other hand, oxidation state of bromine is changing from zero to -1. Therefore, reduction of bromine is taking place.

(c)   Reaction between Zn and S will be as follows.

               Zn(s) + S(s) \rightarrow ZnS(s)    

Here, oxidation state of zinc is changing from 0 to +2. Hence, oxidation of zinc is taking place.

Oxidation state of sulfur is changing from 0 to -2. Therefore, reduction of sulfur is taking place.

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3 years ago
I don't know how to awnser this, please help?
HACTEHA [7]

just say this: the green color is from the mold

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A straight line on a graph means there is a ______ relationship between the dependent variable and the independent variable.
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Proportional linear relationship
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