Rutherford, through his gold-foil experiment, discovered that the nucleus is a small core of protons and neutrons making up most of the atom’s mass.
Answer:
0.13 M
Explanation:
The reaction equation is;
NaOH(aq) + KHC8H4O4(aq) ------> KNaC8H4O4(aq) + H2O(l)
Molar mass of KHP = 204.22 g/mol
Amount of KHP= mass/ molar mass = 0.3365 g/204.22 g/mol = 1.65 × 10^-3 moles
n= CV
Where;
C= concentration
V= volume in dm^3
n= number of moles
C= n/V = 1.65 × 10^-3 moles × 1000/250 = 6.6 × 10^-3 M
If 1 mole of KHP reacts with 1 mole of NaOH
1.65 × 10^-3 moles of KHP will react with 1.65 × 10^-3 moles of NaOH
From
n= CV
We have that only 12.44 ml of NaOH reacted
C= n/V = 1.65 × 10^-3 moles × 1000/12.44
C= 0.13 M
At the equivalence point, the KHP solution turned light pink.
One should be tested at once. You never want to test more because you will mix up your data
Answer:
the answer is false and the reason why is because every 29 days it completes one full cycle
Explanation:
![[H^{+}]= 10^{-pH} = 10^{-4.68}=2.09*10^{-5} [H^{+}] = 2.09*10^{-5}M](https://tex.z-dn.net/?f=%5BH%5E%7B%2B%7D%5D%3D%2010%5E%7B-pH%7D%20%3D%2010%5E%7B-4.68%7D%3D2.09%2A10%5E%7B-5%7D%0A%0A%5BH%5E%7B%2B%7D%5D%20%3D%202.09%2A10%5E%7B-5%7DM)