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3 years ago

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Item 3 Which statement is true about impact craters? They are caused by volcanoes. They only exist on the moon. Earth has impact

craters. Impact craters form when stars collide with planets.

1 answer:

STatiana [176]3 years ago

6 0

Answer: Is option C

Explanation: Earth has impact craters

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When magnesium reacts with chlorine, magnesium ions, Mg2+, and chloride ions, Cl−are formed. In this reaction, magnesium atoms A

Slav-nsk [51]

<u>Answer:</u> In the reaction, magnesium atoms lose electrons.

<u>Explanation:</u>

An ionic compound is defined as the compound which is formed when electron gets transferred from one atom to another atom. These are usually formed when a metal reacts with a non-metal or a metal reacts with a polyatomic ion or a reaction between two polyatomic ions takes place.

Magnesium is 12th element of the periodic table having electronic configuration of $1s^22s^22p^63s^2$

This element will loose 2 electrons to form $Mg^{2+}$ ion

Chlorine is 17th element of the periodic table having electronic configuration of $1s^22s^22p^63s^23p^5$

This element will gain 1 electron to form $Cl^-$ ion

By criss-cross method, the oxidation state of the ions gets exchanged and they form the subscripts of the other ions. This results in the formation of a neutral compound.

The ionic compound formed is $MgCl_2$

Hence, in the reaction, magnesium atoms lose electrons.

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4 years ago

The second reaction in the formation of sulfuric acid occurs slowly.

rjkz [21]

<u>Answer:</u> The correct option is $NO_2(g)$

<u>Explanation:</u>

A catalyst is defined as the chemical species that increases the reaction rate but does not participate in it and is left behind after the completion.

A homogeneous catalyst is one that is present in the same phase as the reactants and products.

A heterogeneous catalyst is one that is present in different phase as that of reactants and products.

For the given chemical reaction:

$2SO_2(g)+O_2(g)\rightarrow 2SO_3(g)$

As all the reactants and products are in gaseous state so, the homogeneous catalyst must also be in the gaseous state only.

Hence, the correct option is $NO_2(g)$

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3 years ago

How much of the moon's bright side can you see during a new moon?

Fittoniya [83]

During a new moon, the moon is out of the sun's rays, thus meaning you cannot see any of it during the new moon phase.

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4 years ago

Which has a different number of neutrons from protons

MA_775_DIABLO [31]

I’m not sure but it has to be hydrogen

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4 years ago

Balanced forces cannot accelerate an object<br><br> True<br><br> False

Zielflug [23.3K]

True Balance forces can not change the motion or direction of an object.

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3 years ago

Read 2 more answers