<span>1 liter of drink contain water = 15%
12l of drink contain water = 15 %
12l of drink contain water at 15% = 1.8l
12l of drink contain water at 50% = 6l
Water to add in 15% water drink = 6l – 1.8l = 4.2l
After adding 4.2l of water in 12l 15% water drink, we get 50% water drink.</span>
Basic elements, and components make up most of the periodic table of elements
<span>[Ag+]3[PO4]3-
Ag3PO4(aq) ----> 3Ag^+(aq) + PO4^3-(aq)
In pure water, the molarity of PO4^3-, which is 1.76x10^-5 M, also represents the molar solubility of Ag3PO4, that means that max 1.76x10^-5 mol Ag3PO4 dissolves in 1L (1000 mL) of water. When the amount of water is halved to 500 mL, the solubility of Ag3PO4 is also halved. (8.8x10^-5 mol).
Ag3PO4(aq) ----> 3Ag^+(aq) + PO4^3-(aq)
8.8x10^-5 mol ..... 3x8.8x10^-5 mol = 2.64x10^-4 mol
[Ag^+] = n / V = 2.64x10^-4 mol / 0.500 L = 5.28x10^-4 M</span>
The respiratory system is responsible for the exchange of oxygen and carbon dioxide. This is the exchange of air in your lungs, to take oxygen in, and to breathe carbon dioxide and other wastes out.
I hope this helps!
~kaikers
