So the answer is Jesus I hope this helps on your test or quiz! ☮️ peace ☮️
Number
The atomic number is the number of protons in one atom of an element.
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Answer:

Explanation:
Moles of SO₃ = 0.760 mol
Volume = 1.50 L


[SO₃] = 0.5067 M
Considering the ICE table for the equilibrium as:

Given:
Equilibrium concentration of O₂ = 0.130 mol
Volume = 1.50 L


[O₂] = x = 0.0867 M
[SO₂] = 2x = 0.1733 M
[SO₃] = 0.5067-2x = 0.3334 M
The expression for the equilibrium constant is:

Answer:
Explanation:
So basically it just asking you question about that surtain subject .
Acids react with metals to form hydrogen gas.