You can look on the periodic table for the number of automic mass units in each element.
1 mole Li = 6.94 amu
6.94 • 2 = 13.9 amu
There are 13.9 amu in 2 moles of Li
In order for us to help we need more information. Possibly the amount of grams you used for Mg in trial 1 or something similar to this.
The camcorder uses a current of 1.4 A.
<em>P = VI
</em>
<em>I</em> = <em>P</em>/<em>V</em> = 11 W/8 V = 1.4 A
<em>Note</em>: The answer can have only <em>one significant figure</em> because that is all you gave for the voltage. However, I calculated the current to two significant figures.
I am pretty sure it is the most reactive elements
Answer:
2Fe + 3H2SO4 → Fe2(SO4)3 + 3H2
Explanation:
Iron is a metallic element with chemical symbol, Fe while concentrated sulphuric acid is a chemical compound with chemical formula, H2SO4. Both are involved in a chemical reaction as follows:
Fe + H2SO4 → Fe2(SO4)3 + H2
However, this reaction is not balanced as the number of moles of each atom in both the reactants and product side is not equal. To balance the equation, we have to ensure that each number of atom is equal. The balanced equation are as follows:
2Fe + 3H2SO4 → Fe2(SO4)3 + 3H2
