Scelta multipla
Which of the following is the correct molecular formula for glucose?
105
views
3. Chemical Reactions
Molecular Formula
Scelta multipla
How many oxygen atoms are present in one molecule of H_2O?
A
2
B
1
C
0
D
3
Guida verificata passo dopo passo1
Identify the chemical formula of the molecule given, which is H_2O. This formula represents water.
Understand that the subscript number following an element symbol indicates the number of atoms of that element in one molecule.
In H_2O, the subscript '2' after H means there are 2 hydrogen atoms, and the absence of a subscript after O means there is 1 oxygen atom.
Therefore, count the oxygen atoms by noting the subscript for O, which is implicitly 1 when no number is shown.
Conclude that one molecule of H_2O contains exactly 1 oxygen atom.
Video correlati
Pratica correlata
