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ICE Princess25 [194]
3 years ago
11

Elaborate on how to classify elements and pure compounds.

Chemistry
2 answers:
maria [59]3 years ago
6 0

tthe corrrect answer is C)Elements and pure compounds are homogeneous materials because they have a uniform composition throughout.

tankabanditka [31]3 years ago
4 0

Answer: C) Elements and pure compounds are homogeneous materials because they have a uniform composition throughout.

Explanation: Element is a pure substance which is composed of atoms of similar elements. Compound is a pure substance which is made from atoms of different elements combined together in a fixed ratio by mass.

Elements are compounds form homogeneous materials as they have uniform composition throughout and the components are evenly distributed throughout the material.

Mixtures are heterogeneous materials as they do not have uniform composition and the components are not evenly distributed throughout the material.

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PLS HELP! Suppose you have a sample of an unknown mineral with a mass of 86 g. You place the sample in a graduated cylinder fill
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Help!!!
kupik [55]

Answer:

1. 0.82 gram of Ag+

2. 4.79 g of Ag₂O₃S

Explanation:

From the given information:

Total amount of Ag₂O₃S = 2.24 grams

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molar mass of Ag₂O₃S = 295.8  g/mole

∴

The mass of the Silver (Ag) in grams is:

= Total\ amount \ of \ Ag^+ \times \dfrac{107.86 \ g/mol}{295.8 \ g/mol}

=2.24 \times \dfrac{107.86 \ g/mol}{295.8 \ g/mol}

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2.

Here, the total amount of Ag₂O₃S = unknown

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molar mass of Ag₂O₃S = 295.8 g/mole

amount of Ag+  = 1.75 g

∴

The mass of Ag₂O₃S = Total \ amount \ of \ Ag^+ \times \dfrac{295.8 \ g/mol}{107.86\ g/mol}

=1.75  \times  \dfrac{295.8 \ g/mol}{107.86\ g/mol}

= 4.79 g of Ag₂O₃S

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