1.A sample of XH3(g) with a mass of 1.88 g occupies a volume of 550 mL at a pressure of 110 kPa and 28.5 oC. Identify element X. Justify your answer with calculations. 2. Your friend goes with you to the store and buys some hairspray. He looks at the can and asks: “why does it say: do not store in direct sunlight or heat?” Using your knowledge, explain to your friend why the can has this warning.
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