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3 years ago

Which answer choice lists the number and type of elements in a compound in the way that is close to their actual arrangement?

1 answer:

alexandr1967 [171]3 years ago

6 0

The chemical formula of a compound express the atoms by which the molecule is formed and the ratio of the atoms in which they are combined.

The space filling model of a compound describe the electron density in the compound of each atom.

The ball and stick arrangement of a compound describe the way in which the molecules are present in three dimensions.

The structural formula state the number of atoms present in the molecule, the type of element or atom present in the molecule and the way in which they are arranged closely which is the bond.

Thus only the structural formula only will cover all the options as stated.

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When a calcium atom forms an ion, it loses two electrons. what is the eletrical charge ofbthe calcium ion?

Jobisdone [24]

Answer:

Explanation:

because it loses 2 electrons

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3 years ago

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If 5.58 g of iron reacts with sulfur to produce 8.79 g of iron sulfide, what is the mass of reacting sulfur? A) 3215 B) 14:37 C)

gogolik [260]

Answer: A) 3.21 g

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side.

$Fe+S\rightarrow FeS$

We are given:

Mass of iron = 5.58 g

Mass of iron sulphide = 8.79 g

Mass of sulphur = x g

Total mass on reactant side = 5.58 + x

Total mass on product side = 8.79 g

Applying law of conservation of mass, we get:

$5.58+x=8.79\\\\x=3.21g$

Hence, the mass of reacting sulfur is 3.21 g.

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3 years ago

1. Aluminium reacts with chlorine to produce aluminium chloride. The balanced reaction is:

Anton [14]

Answer:

Explanation:

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3 years ago

How many molecules are there in 24 grams of FeF(3)?

Burka [1]

The SAME number of molecules are in ANY “mole” of a compound or element. So, you only need to ... 24 g116 g/mol=0.207 moles of FeF3.

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2 years ago

A bar graph of boiling point of milk and water

kap26 [50]

Answer:

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Explanation:

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