When 2 mol of potassium chlorate crystals decompose
Write down a thermo chemical equation for this reaction. When 2 mol of potassium chlorate crystals decompose to potassium chloride crystals and oxygen gas at constant temperature and pressure, 78.0 kJ of heat is given off.
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When the same quantity of heat has flowed into each block, which block will be warmer? A block of aluminum and a block of iron, both having the same mass, are removed from a freezer and placed outside on a warm day.
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Explain how many milliners of hydrogen gas evolved at STP? Assuming the complete reaction of 36.0mg of pure aluminum, according to the reaction described by equation 2Al (s) + 6H (aq)-> 2Al (aq) + 3H2 (g).
A 42.6-mL volume of hydrogen gas is collected over water at 20 degrees Celsius. A 42.0-mg sample of aluminum reacts with an excess of 6MHCl. The pressure of the "wet" hydrogen gas is adjusted to atmospheric pressure, a pressure of 750 Torr.
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The active ingredient in the allergy medication Claritin contains hydrogen (H), carbon (C), nitrogen (N), chlorine (Cl), and oxygen (O). Its molecular formula is C22H23ClN2O2.
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