Answer:
H2O = (1×2) + ( 1×16)
2+ 16
= 18
<u>22.9</u>
18
1.27
I don't know this answer is right or wrong.
so please ask it from your another friend.
I divided the volume by a 1000 because it must be in litres, but it wont make any difference because they will cancel out, but you must always convert it to L or dm3 unless it says in the question something else.
The shape would be the answer if it is taking up space it's a liquid if if it stays in the area of space it's a solid
1.75 moles of Solute or 1.75n.
To find this, you'll need to use the molarity equation which is M = 
List the given items to organize better:
M (Molarity) = .35
V (Volume) = 5L [must always be in Liters]
n (Moles) = ?
Now, for the equation, substitute the variables with the given numbers:
.35 = 
Isolate the variable by multiplying the volume, 5, onto both sides. This will give you the answer of:
1.75 = n
Hope this helps!