Answer:
A physical change, such as a state change or dissolving, does not create a new substance, but a chemical change does. ... In a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.
Explanation:
Answer:
Periodic table of elements
Explanation:
Answer:
nuclear energy is correct
Answer:
The equilibrium constant Kc = 3.2
Explanation:
Step 1: Data given
Number of moles H2S = 1.0 moles
Number of moles H2 = 4.0 moles
Number of moles S2 = 0.8 moles
Volume = 4.0 L
Step 2: The balanced equation
2H2S(g) ⟷ 2H2(g) + S2(g)
Step 3: Calculate concentration
Concentration = moles / volume
[H2S] = 1.0 moles / 4.0 L
[H2S] = 0.25 M
[H2] = 4.0 moles / 4.0 L
[H2]= 1.0 M
[S2] = 0.80 moles / 4.0 L
[S2] = 0.20 M
Step 4: Calculate Kc
Kc = [S2][H2]² / [H2S]²
Kc = (0.20 * 1.0²) / 0.25²
Kc = 3.2
The equilibrium constant Kc = 3.2
