Answered

How many molecules are in 4.50 moles of H2O?
A. 450 molecules B. 6.02 x 1023 molecules C. 2.71 x 1024 molecules D. 3.00 molecules

Answer :

C can be the only correct answer - 6.023 x 10^23 is the amount of molecules in a mol of an element. 4.5 x 6.023 x 10^23 can not equal anything but C.

4.5 x 6.023 x 10^23 = 2.71035 x 10^24

There are 2.71 * 10²⁴  molecules are in 4.50 moles of H₂O?

What is a molecule ?

A molecule is defined as two or more atoms of the same element different element that are bound together.

A molecule may be homo nuclear, which means, it consists of atoms of one chemical element, as with oxygen (O₂); or it may be hetero nuclear, a chemical compound composed of more than one element, as with water (H₂O).

1 mole has 6.023 * 10²³ molecules

So if 1 mole has  6.023 * 10²³ molecules

then 4.5 moles of H₂O will have 4.5 *6.023 * 10²³ molecules

=2.71 * 10²⁴ molecules

Therefore 2.71 * 10²⁴  molecules are in 4.50 moles of H₂O.

To know more about molecule

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