Answer:
16
Explanation:
FIRST AND FOREMOST, BALANCE YOUR EQUATION.
Al + S8 ➡️ Al2S3
Numbers of Al=1. ➡️ Numbers of Al = 2
Numbers of S =8. ➡️ Numbers of S. = 3
USE COEFFICIENT TO BALANCE THE EQUATION.
16Al + 3S8 ➡️ 8Al2S3
Now the Numbers of Al and S in both sides of eqn. is balanced
The Answer Is 16
Answer:
c. Kay's rule
Explanation:
Kay's rule -
The rule is used to determine the pseudo reduced critical parameters of mixture , with the help of using the critical properties of the components of a given mixture .
The equation for Kay's rule is as follows ,
PV = Z RT
Where Z = The compressibility factor of the mixture .
Hence from the given options , the correct answer is Kay's rule .
You can eliminate A, C, and D almost instantly if you know that engineers are construction workers. The answer is B.
Answer:
Mass = 12.82 g
Explanation:
Given data:
Mass of oxygen = 8.5 g
Mass of H₂S = 10.0 g
Mass of SO₂ = ?
Solution:
Chemical equation;
2H₂S + 3O₂ → 2SO₂ + 2H₂O
Number of moles of H₂S:
Number of moles = mass/ molar mass
Number of moles = 10.0 g / 34 g/mol
Number of moles =0.3 mol
Number of moles of oxygen:
Number of moles = mass/ molar mass
Number of moles = 8.5 g / 32 g/mol
Number of moles = 0.3 mol
Now we will compare the moles of SO2 with oxygen and hydrogen sulfide.
O₂ : SO₂
3 : 2
0.3 : 2/3×0.3=0.2 mol
H₂S : SO₂
2 : 2
0.3 : 0.3
The number of moles of SO₂ produced by oxygen are less so it will limiting reactant.
Mass of SO₂:
Mass = number of moles × molar mass
Mass = 0.2 mol × 64.1 g/mol
Mass = 12.82 g
Energy Levels of Electrons. As you may remember from chemistry, an atom consists of electrons orbiting around a nucleus. ... They are restricted to orbits with only certain energies. Electrons can jump from one energy level to another, but they can never have orbits with energies other than the allowed energy levels.
