Ammonium hydroxide has the chemical formula NH4OH. Which statement is true about ammonium hydroxide?

It is an element.
It contains four elements.
Each molecule contains seven atoms.
Each molecule contains four hydrogen atoms.

Question

Ammonium hydroxide has the chemical formula NH4OH. Which statement is true about ammonium hydroxide?

 It is an element.
 It contains four elements.
 Each molecule contains seven atoms.
 Each molecule contains four hydrogen atoms.

aaronq · Answer

What do you think?

anonymous · Answer

@aaronq i thought it was B but im not so sure..

aaronq · Answer

It contains only 3 elements, N, H and O.

count the number of atoms, the subscripts mean that there are that number of atoms of that certain type.

$H_2$ means 2 H atoms
$H_2O$ means 2 H atoms and 1 O atom

anonymous · Answer

so that statement must be false.. its obviously not an element.. so its either C or D

anonymous · Answer

@aaronq

aaronq · Answer

yep it's either C or D. count the number of atoms in the compound and the number of atoms of H.

whpalmer4 · Answer

Any element where there is not a subscript number following occurs just once (at that spot in the formula).  For example, $\text{CO}_2$ has 1 carbon and 2 oxygen atoms.