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3 years ago

PLEASE HELP!!!!!!!!! 12 POINTS!!!!!!!

Chemistry

2 answers:

Nimfa-mama [501]3 years ago

4 0

Ocean-dwelling I would say.

Marizza181 [45]3 years ago

3 0

Yes the correct answer is Ocean-dwelling. Hope this helps :)

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What is the total ionic equation for cuso4+2naoh>>cu(oh)2+na2so4

iVinArrow [24]

Answer:

CuSO4 + 2 NaOH = Cu(OH)2 + Na2SO4

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3 years ago

Where do you find an elements energy levels

ahrayia [7]

You can find an element's amount of energy level by determining their place on the periodic table. An element's amount of energy levels are represented by which period/ row they are in. For example, Calcium has 4 energy levels. I know this because it is in the fourth period on the table.

Hope this helps!

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3 years ago

Is it posible Count a grain of sand?explain

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Answer:

Yes

Explanation:

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3 years ago

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2 years ago

Which of the following has no electrons? Use a periodic table. Question 1 options: H He H– He 2+ Save

Elodia [21]

An electron is a negatively charged subatomic particle present in the space outside the nucleus of an atom. The loss of electron from an atom results in the formation of cation whereas gaining of electron by an atom results in the formation of anion. The cation possesses positive charge due to loss of electron and anion possesses negative charge due to gain of electron.

The neutral atom has no charge on it.

For given atomic symbols:

The atomic number of hydrogen is 1 and the given symbol has no charge that means it is in its neutral state. So, the number of electrons in $H$ is 1.

$He$

The atomic number of helium is 2 and the given symbol has no charge that means it is in its neutral state. So, the number of electrons in $He$ is 2.

$H^{-}$

The atomic number of hydrogen is 1 and the given symbol has a negative charge that represents a gain of electron. So, the number of electrons in $H^{-}$ is 2.

$He^{2+}$

The atomic number of helium is 2 and the given symbol has two positive charge that represents loss of two electrons. So, the number of electrons in $He^{2+}$ is 0.

Hence, $He^{2+}$ has no electrons.

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3 years ago