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The standard enthalpy of formation of n-octane is -249.95 kJ/mol. Evaluate the amount of heat liberated when 5.04 g of n-octane is burned entirely with excess oxygen to form carbon dioxide and liquid water.
Determine the concentration of the sulphuric acid (H2SO4) solution If It takes 58 mL of 0.124 M potassium hydroxide(KOH) to neutralize 41.5 mL of sulphuric acid( H2SO4) solution.? Express your answers in units of moles/liter
If the groundwater at the top of the saturated zone is in equilibrium with air, calculate the concentration of m-Xylene in the air in mol/L
The solubility of lead (II) sulfate is 4.0x10^-2 g/L. What is the solubility product constant for lead (II) sulfate?
steam enters the condenser a heat exchanger of a power plant at 73 kgs 20 kpa and a quality of 85. it exits as
A solution contains 25g of NaCl per 100.0 g of water at 25 degrees Celsuis. Is the solution unsaturated, saturated or supersaturated
When 27.5 mL of 0.520 M H2SO4 is added to 27.5 mL of 1.04 M KOH in a coffee-cup calorimeter at 23.50°C, the temperature rises to 30.17°C. Calculate
a solution of 0.640 g of azulene in 100.0 g of benzene boils at 80.23oc. the boiling point of benzene is 80.10oc the kb
bone was dissolved in hydrochloric acid giving 45.0 ml of solution containing calcium chloride cacl2. to precipitate
Here are the solubilities of a particular solute at two different temperatures. Temperature (c) Solubility (g/100 g h2o) 20.0 42.0 30.0 86.0 Suppose that you have made a saturated solution of this solute using 47.0 g of water at 20.0 °C. How much ..
if 450 ml of some pbno32 solution is mixed with 600 ml of 3.70 x 10-2 m nacl solution what is the maximum concentration
Write a balanced chemical equation for the first reaction in the airbag gas generator (the decomposition of NaN3).
A 100.0 mL aliquot of 0.100 M weak base B (pKb = 5.000) was titrated with 1.00 M HClO4. Find the pH after 1.3 mL of acid is added. Then Find the pH after 11.1 mL of acid is added.
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