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Chemistry

1 answer:

bezimeni [28]2 years ago

4 0

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What does the chemical formula cacl2 show about the compound it represents?

Anna [14]

A chemical formula that indicates the kinds of atoms and the number of each kind in a molecule of a compound.

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2 years ago

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The following figure represents the formation of an ionic compound. Substances A and B are initially uncharged, but when mixed e

Brums [2.3K]

Answer:

This question is incomplete

Explanation:

This question is incomplete but some general explanation provides a clear answer to what is been asked in the question.

An ionic/electrovalent compound is a compound whose constituent atoms are joined together by ionic bond. Ionic bond is a bond involving the transfer of valence electron(s) from an atom (to form a positively charged cation) to another atom (to form a negatively charged anion). The atom transferring is usually a metal while the atom receiving is usually a non-metal.

For example (as shown in the attachment), in the formation of NaCl salt, the sodium (Na) transfers the single electron (valence) on it's outermost shell to chlorine (Cl) which ordinarily has 7 electrons on it's outermost shell but becomes 8 after receiving the valence electron from sodium. It should also be noted that Na is a metal while Cl is a non-metal.

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3 years ago

1. The following reaction does not proceed to form a product: H2O + Au---> no reaction. Why is that?

Xelga [282]

1. B
The positive charge in water is provided by hydrogen, and gold provides the same charge. However, gold is not more reactive than hydrogen so it can not replace it in the compound.

2. In order to balance the equation, you must sure there are equal moles of each element on the left and right side of the equation:
2C₂H₆ + 7O₂ → 4CO₂ + ₆H₂O

3. The number of moles of sodium atoms on the left of the equation must be equal to the number of moles of sodium atoms on the right, as per the law of conservation of mass. The answer is B.

4. C.
A synthesis reaction usually results from single displacement because some element or compound is produced in its pure form

5. B.
The gas being produced is being synthesized.

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2 years ago

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Which of the elements shown will not form ions, and why will they not do so?

grigory [225]

No elements visible!

Ions form between metals and non-metals.

Hope this helps!

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The boiling point of a substance in City A is found to be 145°C the boiling point of th same substance in Xity B is 141°C which

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