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stepan [7]
3 years ago
6

Bromine, a liquid at room temperature, has a boiling point of 58°C and a melting point of –7.2°C. Bromine can be classified as a

Chemistry
2 answers:
daser333 [38]3 years ago
6 0
<span>Answer: option C) pure substance.
</span><span />

<span>Justification:
</span><span />

<span>A sharp melting point is a characteristic of pure substances.
</span><span />

<span>The pure substances are either elements or compounds: they have a unique chemical constitution (kind of elements, number of atoms of each element in the chemical formula, and same chemical bonds).
</span><span>
</span><span>
</span><span> Other products, this is mixtures (either homogeneus or heterogeneous), being composed of different elements and compounds in different variable ratios, exhibit a range as boiling point. For example the boiling point of the gasoline is about 19°C to 200°C.
</span>

Bromine is an element: you find it in the periodic table, with the atomic number 35, hence a pure substance.
<span /><span />
Mama L [17]3 years ago
5 0

On mine the answer is (D) but the answer would still be "pure substance."

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3 years ago
How many grams of ag can be formed from 5.50 grams of ag2o in the equation: 2ag2o (s) → 4ag (s) o2 (g)?
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From the given balanced equation we have find out the amount (in gm) of Ag formed from 5.50 gm of Ag₂O.

2Ag₂O(s) → 4Ag (s) + O₂ (g)

We know, molecular mass of Ag₂O= 231.7 g/mol, and atomic mass of Ag= 107.8 g/mol. Given, mass of Ag₂O=5.50 gm. Number moles of Ag₂O=\frac{5.50}{231.7}= 0.0237 moles.

From the balanced chemical reaction we get 2 (two) moles of Ag₂O produces 4 (four) moles of Ag. So, 0.0237 moles of Ag₂O produces \frac{4X0.0237}{2} moles=0.0474 moles of Ag= 0.0474 X 107.8 g of Ag=5.11g Ag.

Therefore, 5.50 g Ag₂O produces 5.11 g of Ag as per the given balanced chemical reaction.


4 0
3 years ago
Which statement best describes an igneous intrusion? 
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Ede4ka [16]
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3 0
3 years ago
Read 2 more answers
Are Atoms that have no specific arrangement are still considered solid matter.
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Answer:

In the same way that a large solid holds its shape, the atoms inside of a solid are not allowed to move around too much. Atoms and molecules in liquids and gases are bouncing and floating around, free to move where they want. The molecules in a solid are stuck in a specific structure or arrangement of atoms.

Explanation:

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2 years ago
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