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Degger [83]
3 years ago
6

Use the table on the right to calculate each required quantity.

Chemistry
1 answer:
k0ka [10]3 years ago
3 0

a. 35.8 KJ

b. 871 g

c. Fe

..........................................................................................

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What happens when magnesium reacts with iodine to make magnesium iodide?
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Explanation:

Atomic number of magnesium is 12 and its electronic distribution is 2, 8, 2. On the other hand, atomic number of iodine is 53 and its electronic configuration is [Kr]4d^{10}5s^{2}5p^{5}.

Hence, there are 7 valence electrons in an iodine atom and there are 2 valence electrons in a magnesium atom.

So, one atom of iodine requires one electron from a donor atom to complete its octet. But one magnesium atom contains two valence electrons.

Therefore, one magnesium atom will combine with two iodine atoms to result in the formation of magnesium iodide as follows.  

            Mg^{2+} + 2I^{-} \rightarrow MgI_{2}

Therefore, an ionic bond will be formed when  magnesium reacts with iodine to make magnesium iodide.

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How is energy in a washing machine being utilised and wasted?
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3 years ago
Is Newton's statement a law or a theory? It is a theory because it developed and changed over time as new technology provided ne
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It is a law because it is a statement of fact that does not need any more experimental support.

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A hypothesis is an acceptable assumption that is formulated through the collection of information and data and that attempts to explain some phenomenon. In other words, a hypothesis is a conjecture with which one tries to explain an observed fact. The formulation of a hypothesis can be derived in two different ways: by generalization, from a certain number of cases or observed phenomena; and, by analogies observed in the occurrence of different phenomena.

A theory is something that attempts to explain some phenomenon and that is accepted as true by the scientific community. In other words, a theory is a set of rules that describe the behavior of a particular system.

A law is a statement that expresses the constant relationships between phenomena of nature, society or the mind. Scientific law can be defined as an invariable relationship of terms. In other words, a law is what is scientifically proven to be true, it is universally applicable.

So scientific theories and scientific laws are based on hypotheses. But a theory is the explanation of an observed phenomenon, while a scientific law is the description of an observed phenomenon.

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Then, the correct option is <u><em>"It is a law because it is a statement of fact that does not need any more experimental support."</em></u>

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3 years ago
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