How many hydrogen atoms are there in the following compound: 4ch4. a)4 b)8 c)12 d)16

16

Explanation:

The coefficcient infront of the C for carbon applies to the whole molecule. H ALSO HAS A SUBSCRIBT OF 4. 4×4 is 16

Answer : The number of atoms of hydrogen present in are, (D) 16 hydrogen.

Explanation :

As we know that, is a methane molecule that is made up of the combination of one carbon and four hydrogen atom.

In molecule, there are two elements which are carbon (C) and hydrogen (H).

The number of atoms of carbon = 4

The number of atoms of hydrogen = 4 × 4 = 16

Hence, the number of atoms of hydrogen present in are, (D) 16 hydrogen.

h let me think

2fe + 3h2so4 -> fe2(so4)3 + 3h2

it is necessary to balance equations in order to get the proper amount of reactants as well as products in order not to make a miscalculation.

you cannot change the subscripts as that would change the substance itself. for instance, diatomic elements such as h2 only have the subscript two when a gas. another example would be so4, if you were to change the subscript, the element would no longer be sulfate.

we change the coefficients instead as that only changes the number of molecules rather than the substance itself.

hope this !