two pure substances, a and z, are to be identified. pure substance a can be broken down by a chemical change. pure substance z cannot be broken down by a chemical change. what can be concluded about these pure substances?

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What is likely to happen if a new aggregate demand curve moves to the right? prices and output would drop, and the equilibrium point will stay the same. prices would rise, and output would drop in the short run. prices and output would rise, and the equilibrium point will change. prices would rise, and output would drop in the long run.