Answer:
The answer to your question is Copper (II) chloride
Explanation:
Data
Limiting reactant = ?
volume of CuCl₂ = 415 ml
[CuCl₂] = 3.0 M
mass of Al = 25 g
Process
1.- Calculate the mass of CuCl₂ in solution
Molarity = moles / volume
moles = Molarity x volume
moles = 3 x 0.415
moles = 1.245
Molar mass of CuCl₂ = 63.5 + (35.5 x 2)
= 63.5 + 71
= 134.5 g
134.5 g ----------------------- 1 mol
x ----------------------- 1.245 moles
x = (1.245 x 134.5)/1
x = 167.5 g of CuCl₂
2.- Balanced chemical reaction
3CuCl₂ + 2 Al ⇒ 2AlCl₃ + 3Cu
3.- Calculate proportions
Theoretical proportion = (3 x 134.5)/(2 x 27) = 403.5/54 = 7.47
Experimental proportion = 167.5 g / 25 g = 6.7
4.- Conclusion
As the experimental proportion was lower than the theoretical proportion the limiting reactant is CuCl₂.
The balanced chemical reaction will be:
H2 + Cl2 = 2HCl
We are given the amount of reactants and since chlorine is in excess we can say that all of the hydrogen supplied will be in complete reaction. This will be our starting point.
0.8 g H2 (1 mol H2 / 2.02 gH2) (2 mol HCl/1mol H2) ( 36.46 g HCl/1mol HCl) = 28.88 g HCl
Thus, the answer is 28.88g H2O.
Well, think of it this way. If you put a big paper circle on the ground, and then you put smaller circles on top of the big circle, which one would have been there longer? The big circle, of course. So the same logic applies here: if the smaller craters had been older than the big crater, then when the big crater was formed, the smaller ones would've been buried. Therefore, crater 2 is older than the smaller craters inside it.
Hope that helped! =)
Answer:
heat
Explanation:
most of the gasoline's energy is released as heat energy rather than kinetic energy on the pistons. this is why a car engine must constantly be cooled by the water to air heat exchanger we call a radiator