Answer:
I think first one..........
Answer:
Activation energy for the uncatalyzed reverse reaction = 103 kJ/mol
Explanation:
Activation energy decreases from = 56 kj/mol to 35 kj/mol
products = 78 KJ lower in energy than reactants
Activation energy for the uncatalyzed reverse reaction = 103 kJ/mol
attached below are the sketches of approximate energy-level for both catalyzed and uncatalyzed reactions
Answer:
A. 0.01 M
Explanation:
Molar mass (KCl) = 39.1 + 35.5 = 74.6 g/mol
0.37 g KCl * 1 mol/74.6 g = 0.004960 mol
500 mL = 0.5 L
Molarity = mol solute/L solution = 0.004960 mol/0.5 L = 0.01 M
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