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2 years ago

How can you identify gas in a chemical reaction without observing the atoms or molecules?

Chemistry

1 answer:

nikitadnepr [17]2 years ago

5 0

Answer:

There are five signs of a chemical change:

Colour Change.

Production of an odour.

Change of Temperature.

Evolution of a gas (formation of bubbles)

Precipitate (formation of a solid).

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2 HCl + 1 Zn -> 1 H2 + ZnCl2 what type of reaction is this

Salsk061 [2.6K]

Answer:

Single replacement reaction

Explanation:

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2 years ago

Which of the following is true of group 6A?

USPshnik [31]

Answer:

The answer to your question is: Includes sulfur and gain two electrons

Explanation:

Includes Chlorine This option is wrong, Chlorine belongs to group VII.

Includes Sulfur This option is true, Group VI includes Oxygen, Sulfur, Selenium, Tellurium.

Gain 2 electrons . This option is true, Elements in group VI have six valence electrons so they gain to electrons to become estable.

Tend to form +2 ions This option is wrong, this elements form -2 ions

Have 5 valence electrons This option is wrong, this elements have 6 valence electrons.

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2 years ago

True or False: The average atomic mass is always closer to the isotope with the smallest mass

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2 years ago

If a solution is saturated, which of these is true?

Fiesta28 [93]

If a solution is saturated, that means it already posses the maximum number of solutes thus have been dissolved in it, and thus the concentration cannot be increased.

8 0

2 years ago

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What name should be used for the ionic compound Ga(SO)? Gallium(III) sulfide gallium(III) sulfate gallium(III) trisulfide galliu

Evgen [1.6K]

Answer: The name given to $Ga(SO_4)_3$ is Gallium (III) sulfate.

Explanation: This is an ionic compound because in aqueous solution it dissociates into its respective ions.

Naming of Ionic compounds.

Name the cation first and then write its oxidation number in roman numerical.
Then name the anion or polyatomic ions without writing any prefix of the number of atoms present in it.
The name of the anion should have a suffix '-ide' like for chlorine, the name will be chloride etc..
For polyatomic ions, the suffix used will be '-ate' like for $SO_4^{2-}$ the name will be sulfate etc..

Name of the given ionic compound is Gallium (III) Sulfate.

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3 years ago

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