OH- is the ion that increases the concentration of a base
Answer:
Al^3+(aq) + PO4^3-(aq) → AlPO4(s)
Explanation:
Step 1: Data given
potassium phosphate = K3PO4
aluminum chloride = AlCl3
potassium chloride = KCl
aluminum phosphate = AlPO4
Step 2: The unbalanced equation
K3PO4(aq) + AlCl3(aq) → KCl (aq)+ AlPO4(s)
On the left side we have 3x K (in K3PO4), on the right side we have 1x K (in KCl). To balance the amount of K on both sides, we have to multiply KCl (on the right side ) by 3. Now the equation is balanced.
K3PO4(aq) + AlCl3(aq) → 3KCl(aq)+ AlPO4(s)
The net ionic equation, for which spectator ions are omitted - remember that spectator ions are those ions located on both sides of the equation - will look like this
Al^3+(aq) + PO4^3-(aq) → AlPO4(s)
2Al + 3Br2 ===> 2AlBr3
We called these reactions simple compositions. They take 2 elements from the periodic table and make a chemical compound on the right. I think they are now called composition reactions.
"Iron and sulfur are both elements from the periodic table of elements. As such, each one has its own unique set of physical and chemical properties. Iron is a metal, while sulfur is a nonmetal. When these two are heated together, the iron atoms combine with the sulfur atoms to make a compound known as iron sulphide. A compound is different from elements in that it is made from the chemical union of two or more elements. Iron sulphide is not iron or sulfur; it is a pure substance with its own set of distinguishing physical and chemical characteristics. A mixture, on the other hand, is what you get by combining two or more elements, but not chemically combining them. In the case of the iron and the sulfur, if you mix them and provide no heat, you simply have a mixture of iron and sulfur. Mixtures are different from compounds in that they are easily separated. A magnet could be used to separate the iron from the sulfur, because iron is attracted to magnets, while sulfur is not." https://www.enotes.com/homework-help/explain-why-iron-sulphide-compound-not-just-336735 - I hope this helps! :)
Answer:
0.17094 liters
Explanation:
-For STP, Pressure=1 atm and Temperature=273K
-We apply the combined gas law which relates temperature, pressure and Volume:
![\frac{PV}{T}=k](https://tex.z-dn.net/?f=%5Cfrac%7BPV%7D%7BT%7D%3Dk)
-We therefore equate the relationship at different temperatures as follows:
![\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}\\\\\frac{1\times 1.4\ }{273}=\frac{1.2\times V_2}{40}\\\\V_2=\frac{1\times 1.4\ }{273}\times \frac{40}{1.2}\\\\=0.17094\ L](https://tex.z-dn.net/?f=%5Cfrac%7BP_1V_1%7D%7BT_1%7D%3D%5Cfrac%7BP_2V_2%7D%7BT_2%7D%5C%5C%5C%5C%5Cfrac%7B1%5Ctimes%201.4%5C%20%7D%7B273%7D%3D%5Cfrac%7B1.2%5Ctimes%20V_2%7D%7B40%7D%5C%5C%5C%5CV_2%3D%5Cfrac%7B1%5Ctimes%201.4%5C%20%7D%7B273%7D%5Ctimes%20%5Cfrac%7B40%7D%7B1.2%7D%5C%5C%5C%5C%3D0.17094%5C%20L)
Hence, the new volume is 0.17094 liters