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Romashka-Z-Leto [24]
4 years ago
15

Make a list of solid mixtures in your classroom?

Chemistry
2 answers:
Nutka1998 [239]4 years ago
6 0
Desks chairs whiteboard or chalkboard table
galben [10]4 years ago
5 0
Solid mixtures in a classroom consists of desks,chairs,blackboards, etc. Look at it like every solid thing in your classroom is a mixture. That is the easiest way to solve this problem. 
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Solutions of mercury (I) nitrate and potassium bromide are mixed
Afina-wow [57]
With that informatio you can:

1) Write the chemical equation
2) Balance the chemical equation
3) State the molar ratios
4) Predict if precipitation occurs.

I will do all four, for you:

1) Chemical equation:

mercury(I) nitrate  potassium bromide    mercury(I) bromide  potassium nitrate
<span>Hg2(NO3)2             +        KBr                   → Hg2Br2          +      KNO<span>3

2) Balanced chemical equation
</span></span>
<span>Hg2(NO3)2 + 2KBr → Hg2Br2 + 2KNO<span>3

3) Molar ratios or proportions:

1 mol </span></span><span>Hg2(NO3)2 : 2 mol KBr : 1 mol Hg2Br2 : 2 mol KNO<span>3

4) Prediction of precipitation.

You can use the solubility rules or a table of solubilities. I found in a table of solutiblities that mercury(I) bromide is insoluble and potassium bromide is soluble, Then you can predict that the precipitation of mercury(I) bromide will occur.


</span></span>
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3 years ago
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How is the structure of the atom arranged?
In-s [12.5K]

Answer:

An atom is a complex arrangement of negatively charged electrons arranged in defined shells about a positively charged nucleus. This nucleus contains most of the atom's mass and is composed of protons and neutrons (except for common hydrogen which has only one proton).

Explanation:

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