Answer:
The density of the metal is 3.457 g/cm³.
Explanation:
Given,
mass of metal = 121 grams
Volume = 35 cm³.
Density = ?
Density of the metal can be found by using the formula
Density = Mass/Volume
Substituting the values,
Density = 121/35 = 3.457 g/cm³.
We have that the total enthalpy of the reaction changes with the quantity of the reactants and it is proportional to them. Also, the reverse of a reaction has the opposite enthalpy. Hence, since we need to multiply by 2, the reactants are double and thus the value of the enthalpy is 2 as big. Also, since we are using the inverse reaction, we must also invert the sign. Thus, for this reaction we must use the value H=572 kJ.
Answer:
AlI3 is the chemical formula and the name of compound is Aluminium iodide.
Hello!
There are two tests one could use to identify a solution of Ag₃PO₄ (keep in mind that this compound is very insoluble and very little amounts of it are in solution)
For Ag⁺ ion: Precipitate with NaCl. The adding of NaCl should produce a white precipitate.
Ag⁺(aq) + NaCl(s) → AgCl(s)↓ + Na⁺
For PO₄⁻³ ion: Precipitate with Ammonium Molybdate and Acid. This reaction should produce a yellow precipitate:
PO₄⁻³<span> + 3NH</span>₄⁺<span> + 12MoO</span>₄⁻²<span> + 24H</span>⁺<span> </span>→<span> (NH</span>₄)₃PO₄.12MoO₃(s)↓<span> + 12H</span>₂<span>O
</span>
Have a nice day!
