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.
Answer:
113
Explanation:
We are given that the atom of cadmium has 66 neutrons:
Number of neutrons in Cd = 66
Now;
Mass number = ?
The mass number of an element is the sum of the number of protons and number of neutrons
Mass number = number of protons + number of neutrons
By the position of cadmium, it has an atomic number of 47 and this is the number of protons
Mass number = 47 + 66 = 113
Sorry am not sure I only remember solid and gas that’s all
The new volume of the gas that has an initial pressure of 5.6 x 10⁵ Pa is 5.7L. Details about volume of the gas can be found below.
<h3>How to calculate volume?</h3>
The volume of a gas can be calculated using the Boyle's law equation as follows:
P1V1 = P2V2
Where;
- P1 = initial pressure
- P2 = final pressure
- V1 = initial volume
- V2 = final volume
1.53 × 5.6 × 10⁵ = 1.5 × 10⁵ × V2
8.568 × 10⁵ = 1.5 × 10⁵V2
V2 = 8.57 × 10⁵ ÷ 1.5 × 10⁵
V2 = 5.7L
Therefore, the new volume of the gas that has an initial pressure of 5.6 x 10⁵ Pa is 5.7L.
Learn more about volume at: brainly.com/question/12357202
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