<span>a means of solving a problem or dealing with a difficult situation.</span>
Answer:
Explanation:
I usually just use approximate values for the elements on the periodic table. The reason for that is that everyone uses a different periodic table. Some are rounded others are more precise. Redo this problem with better numbers for the elements.
N = 14
H = 1
N2H4 = 2*14 + 4*1
N2H4 = 28 + 4 = 32
If you are given 31 grams of N2H4 then the formula is
mols = given mass / molecular mass
mols = 31 / 32
moles = 0.97
Now you have a problem . Is the answer 1.0 or is 0.9?
I think I would pick 1.0
The statement which applies <span>to the horizontal rows or periods in the periodic table is that C. the properties change going across each row.
The elements in the same row have the same properties, which change depending on the row the element is in.
</span>
Ph is the value from 1-14
Ion is a molecule with a charge
Acid increases ions
Alkali decreases ions
Hope this helps