Answer: XF8
Explanation:
Empirical Formular shows the simplest ratio of elements in a compound.
Xe = 46.3% F = 53.7%
Divide the percentage composition of each element by the atomic mass.
Xe = 46.3/ 131.3 F= 53.7/ 19
= 0.353( approx) = 2.826 (approx)
Divide through with the smallest of the answers gotten in previous step.
Xe = 0.353 / 0.353 F = 2.826/ 0.353
= 1 = 8.0
Empirical formular = XF8
Answer:
Atoms or molecules
Explanation:
Because if molecules are heated or colded the can be liquid or solid
Answer:
Pressure = 73.49 atm
Explanation:
The balance chemical equation is as follow,
C₃H₈ + 5 O₂ → 3 CO₂ + 4 H₂O
According to balanced equation,
1 mole of C₃H₈ on combustion gives = 3 moles of CO₂
So,
2 moles of C₃H₈ on combustion will give = X moles of CO₂
Solving for X,
X = 2 moles of C₃H₈ × 3 moles of CO₂ ÷ 1 mole of C₃H₈
X = 6 moles of CO₂
Now, in second step we will calculate the the pressure exerted by CO₂ at 2.5 L volume and 373 K temperature. For this we will use Ideal gas equation assuming the gas is acting as an ideal gas. Therefore,
Data:
Temperature = T = 373 K
Volume = V = 2.5 L
Moles = n = 6 mol ∴ As calculated above.
Gas Constant = R = 0.0821 atm.L.mol⁻¹.K⁻¹
Formula Used:
P V = n R T
Solving for P,
P = n R T / V
Putting Values,
P = 6 mol × 0.0821 atm.L.mol⁻¹.K⁻¹ × 373 K ÷ 2.5 L
P = 73.49 atm
The property of potential energy that distinguishes it from kinetic energy are Shape and position