The answer is 8 :)
All nobel gases have 8 outer electrons.
Answer:
![\boxed{3.966 \times 10^{24}\text{ atoms of Ag}}](https://tex.z-dn.net/?f=%5Cboxed%7B3.966%20%5Ctimes%2010%5E%7B24%7D%5Ctext%7B%20atoms%20of%20Ag%7D%7D)
Explanation:
(a) Balanced equation
Cu + 2AgNO₃ ⟶ Cu(NO₃)₂+ 2Ag
(b) Calculation
You want to convert atoms of Cu to atoms of Ag.
The atomic ratio is ratio is 2 atoms Ag:1 atom Cu
![\text{Atoms of Ag} = 19.83 \times 10^{23}\text{atoms Cu} \times \dfrac{\text{2 atoms Ag}}{\text{1 atom Cu}}\\\\= 3.966 \times 10^{24}\text{ atoms of Ag}\\\\\text{The reaction will produce }\boxed{\mathbf{3.966 \times 10^{24}}\textbf{ atoms of Ag}}](https://tex.z-dn.net/?f=%5Ctext%7BAtoms%20of%20Ag%7D%20%3D%2019.83%20%5Ctimes%2010%5E%7B23%7D%5Ctext%7Batoms%20Cu%7D%20%5Ctimes%20%5Cdfrac%7B%5Ctext%7B2%20atoms%20Ag%7D%7D%7B%5Ctext%7B1%20atom%20Cu%7D%7D%5C%5C%5C%5C%3D%203.966%20%5Ctimes%2010%5E%7B24%7D%5Ctext%7B%20atoms%20of%20Ag%7D%5C%5C%5C%5C%5Ctext%7BThe%20reaction%20will%20produce%20%7D%5Cboxed%7B%5Cmathbf%7B3.966%20%5Ctimes%2010%5E%7B24%7D%7D%5Ctextbf%7B%20atoms%20of%20Ag%7D%7D)
The density of an ordinay rock is close to 3 g/cm^3 wihle the density of the paper clips is close to 8 g/cm^3 (the density of steel), then equal apparent volumes (same box) will contain different mass, being of course the mass of the box with paper clips much higher than that of the box with rocks.
Answer:
See below.
Explanation:
a. The pH would decrease.
b. An acid.
c. The pH would increase.
d. A base. More accurately an alkali ( which is a soluble base).