Answer : 5100 KJ
Explanation : In the given reaction of
we can see that 2 moles of Al is producing -850 KJ of energy
so for 12 moles of Al we can calculate as;
12 moles of Al X
= -
5100 KJ
So, we can say that 12 moles of Al will need -5100 KJ of energy.
Answer:
The volume of the solution must be increased to 71.429 millimeters by adding 66.359 millimeters of solute to reduce molarity from 6.82 M to 0.49 M.
Explanation:
The molarity is a unit used for solution that is equivalent to the amount of moles of solute per unit volume of solution. That is:
Where:
- Amount of moles of solute, measured in moles.
- Volume of the solution, measured in liters.
To reduce the molarity of the solution, more millimeters of solvent should be added. Firstly, the amount of moles of acetic acid inside the 6.82 M solution needs to be determined (
and 
):
Now, the resulting volume of solution after diluting the acetic acid solution is: (
and ):
(1 L = 1000 mL)
The amount of solvent needed to dilute the solution is:
(1 L = 1000 mL)
The volume of the solution must be increased to 71.429 millimeters by adding 66.359 millimeters of solute to reduce molarity from 6.82 M to 0.49 M.
2Na + O2 -> NaO2
that name is :
sodium peroxide
Answer:
Formally stated, Newton's third law is: For every action, there is an equal and opposite reaction. The statement means that in every interaction, there is a pair of forces acting on the two interacting objects. The size of the forces on the first object equals the size of the force on the second object.
B. They are are made of at least one cell
