Calculate the number of molecules in 0.75 moles of ch₄. x 10²³ molecules

Ans :4.5 * 10²³ molecules

Given:

Moles of CH4 = 0.75

To determine;

The number of molecules of CH4 in 0.75 moles

Explanation:

1 mole of CH4 contains Avogadro's number i.e. 6.023*10²³ molecules

Therefore, 0.75 moles would correspond to :

= 0.75 moles * 6.023*10²³ molecules/1 mole

= 4.5 * 10²³ molecules

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

that's it!

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