I had this same question a while back, so I may not be right, but I'm pretty sure it's D. None of the above.
Answer:
D.
because her right ear was closer to Michelle, who was the source of the sound
Answer:
Fe3+(aq) + 2S2O32–(aq)→ [Fe(S2O3)2(H2O)2]–(aq)
One mole of Iron(III) nitrate and two mole of sodium thiosulfate are used for a balanced equation
Explanation:
Molecular formula of sodium thiosulfate is S2O32-
Molecular formula of Iron(III) nitrate - Fe2NO3
The chemical equation
Fe3+(aq) + 2S2O32–(aq)→ [Fe(S2O3)2(H2O)2]–(aq)
One mole of Iron(III) nitrate and two mole of sodium thiosulfate are used for a balanced equation
Answer:
456 kJ
Step-by-step explanation:
CH₄ + 2Cl₂ ⟶ CCl₄ + 2H₂ ; ΔH = 45.6 kJ
Treat the heat as if it were a product in the equation. Then use the molar ratio (45.6 kJ/2 mol Cl₂) in the usual way.
Amount of energy = 20 mol Cl₂ × (45.6 kJ/2 mol Cl₂) = 456 kJ
You must add 456 kJ to react 20 mol of chlorine with excess methane.