Elaborate on how to classify elements and pure compounds.

2 answers:

6 0

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

tankabanditka [31]2 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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Calculate the molarity of a KCl solution if 37.3 g of KCl are dissolved in water to give a

saw5 [17]

Answer:

Explanation:

find concentration in g/cm^3,then molar mass of kcl(39+35.5),if 1mol=74.5g what about 74.6

8 0

3 years ago

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Nesterboy [21]

Answer:

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Alex Ar [27]

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8 0

2 years ago

what is the difference between a chemical bonds formed in the molecules of 02 and the chemical bonds formed in crystals of a NaC

Jobisdone [24]

Answer:

O2 is a covalent substance while NaCl is an ionic substance

Explanation:

In O2 molecule, the bond is between 2 oxygen atoms which are non - metals. Thus, this is a covalent bond since it involves 2 non metals.

Whereas, for the NaCl molecule, the bond is between a metal sodium (Na) and a non metal Chloride(Cl) and thus we can say this is an ionic bond.

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2 years ago

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Explanation:

6 F2------->4 AlF3

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so 5.5 moles

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2 years ago