The gas-phase reaction cl(g)+hbr(g)−→−hcl(g)+br(g) has an overall energy change of −66kj. the activation energy for the reaction is 7 kj. (a) sketch the energy profile for the reaction, and label ea and δe. (b) what is the activation energy for the reverse reaction?

What is the density of the black hole

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Solutions of sodium carbonate and silver nitrate react to form solid silver carbonate and a solution of sodium nitrate. a solution containing 3.50 g of sodium carbonate is mixed with one containing 5.00 g of silver nitrate. how many grams of sodium carbonate, silver nitrate, silver carbonate, and sodium nitrate are present after the reaction is complete?