Answer:
a
Explanation:
it is A because h20 and c02 are molecules while what make them up are atoms
Answer:
is reduced in the reaction
Explanation:
The given reaction is

The oxidation number of
is changed from 

And The oxidation number of
is changed from 

Hence,
is oxidized and
is reduced
The mass number of aluminium hydroxide is 78 thus, the number of moles in 0.745 g is:
no. of moles= mass/ RFM
= 0.745/78
=0.00955moles
Therefore the 0.00955 moles should be in the 35.18 ml
therefore 1000ml of the solution will have:
(0.00955ml×1000ml)/35.18
=0.2715moles
The solution will be 0.27M hydrochloric acid