Isotopes have different amount of neutrons.
So you can tell what is an isotope by it neutrons.
4Fe + 3O2 --> 2Fe2O3
iron (III) the roman numerals mean it has a positive charge of 3 and Oxygen gas is a diatomic so it's O2 and a charge of -2. So then you combine them and get Fe2O3 and then you just balance it.
Movement of particles from areas of greater to lesser is called diffusion.
Multiply the price of the grape by the exchange rate to get the dollar/kg unit,
Euro/kg * Dollar/Euro = Dollar/kg
One 1Kg = 2.2 pound
So we have, 1.68 Euro/kg * 1.39 Dollar/Euro * 1Kg/2.2lb
[1.68 * 1.39]/ 2.2 = 1.06
Thus, the cost of grapes in dollar per pound is $1.06.
Answer:
decrease the molar solubility of the solid relative to its molar solubility in pure water.
Explanation:
The common ion effect is defined as a decrease in the solubility of a solute because of the addition of a second solute with which it has a common ion. If a solution already contains a solute MX and another ionic solid containing BX is added to the solution, the X^- anion is common to the both species. Hence the presence of MX will decrease the solubility of BX compared to the solubility of BX in pure water.
Generally, when a soluble ionic solid is placed in a solution containing a common ion, the molar solubility of the solid decreases compared to its molar solubility in pure water.