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.
Ethanol, C2H5OH, is mixed with gasoline and sold as gasohol. Use the following to determine the grams of ethanol required to produce the 342 kJ of heat.
Hydrogen, H2, is used as a rocket fuel. The hydrogen is burned in the oxygen to form the water vapor. Estimate the enthalpy change per gram of water?
If particular decision maker allots the indifference probability of 0.000001 to $0 payoff, would the individual buy the lottery ticket? Use expected utility to justify the answer.
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.
The current in an electron beam in the cathode-ray tube is computed to be 70 µA. Determine the number of electrons which strike the screen in 25 seconds?
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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