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The standard enthalpy of formation of n-octane is -249.95 kJ/mol. Compute the amount of heat liberated when 6.07 g of n-octane is burned completely with excess oxygen to form carbon dioxide and liquid water.
A flask is filled with vapor by boiling a volatile unknown liquid in the foil covered flask. As it boils away, the vapor of the unknown pushes the air out of the flask through a tiny pinhole opening and eventually the flask is filled with an atmos..
Given the unbalanced equation, Cr(NO3)3(aq) + LiOH(aq) LiNO3(aq) + Cr(OH)3(s), how many grams of Cr(OH)3 are produced from 0.084 g of Cr(NO3)3?
What experimental difficulty would you encounter if you had neglected to include a drying step before evaporation
what is the solubilty of O2 at an elevation of 12, 000 ft where the atmospheric pressure is 0.657 atm? Assume the temperature is 25 degrees celsius, and that the mole fraction of O2 in air is 0.209 at both 12, 000 ft and at sea level.
Consider the following reaction. N2 + 3 H2 → 2 NH3 . 28.0 grams of N2 and 5.04 grams of H2 are reacted, producing 17.8 grams of NH3. What is the percent yield?
What ions and/or molecules are present in relatively large proportions in a solution of a weak acid H2S (aq)?
An analytical procedure requires a solution of chloride ions. how many grams of caCl2 must be dissolved to make 2.15 L of 0.0520 M Cl-.
Calculate the amount of energy in the form of heat that is produced when a volume of 2.73 L of SO2(g) is converted to 2.73 L of SO3(g) according to this process at a constant pressure and temperature of 1.00 atm and 25.0 °C. Assume ideal gas behav..
Determine the molarity of this solution. (b) If I use 1 cup of vinegar (236.588 mL) to help create a cleaning solution for my windows, how many molecules of acetic acid is this?
How many grams of sodium bromide must be added to 309 grams of water in order to prepare a 0.108 molal sodium bromide solution?
The number of lone pairs = The number of single bonds = The number of double bonds = 2. The central nitrogen atom A. Obeys the octet rule B. Has an incomplete octet. C. Has an expanded octet.
NaHCO3 + HCl I have provided the products for you here. Can you please try to determine the reactants and then balance the full equation.
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