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oxygen gas is collected over water at 21 degrees C and an atmosperic pressure of 748 mm Hg. What is the partial pressure of oxygen gas in the mixture
What is the theoretical yield of aluminum oxide if 2.40 of aluminum metal is exposed to 2.10 of oxygen?
How much potassium nitrate has to dissolve in water to absorb 118 kj of heat? Lattice E is -163.8kcal/mol and heat of hydration is -155.5 kcal/mol.
What mimimum hydronium ion concentration (M) would be needed to prevent precipitation of cupric hydroxide (Cu(OH)2 Cu2+ + 2OH- , Ksp = 2.2 x 10-20) from a solution containing 0.010 M Cu2+ ion?
How many gms of H2O must be combined to 519.5 gms of methanol at 20°C to have an osmotic pressure of 408 mm of Hg? Methanol density = 0.8921 g/mL.
What volume of hydrochloric acid solution of 0.25 M must be diluted to prepare 1.00 L of 0.040 M HCl and calculate Keq at this temperature for the given reaction 2 NOCl (g) W 2 NO (g) + Cl 2 (g) ( reaction is at equilibrium):
A white precipitate formed when the barium hydroxide solution was mixed with the sulphuric acid. *Mass of filter paper=0.96g *Mass of filter paper and precipitate=5.25g
477 J amount Energy is added to a 74.0 grams sample of H 2 O at a temperature of 21 degree Celsius. Determine what will be the final temperature of the H 2 O?
The heat of neutralization of HCl by NaOH is H°rxn = -56.2 kJ/mol. How much heat is released when 125 mL of 1.750 M HCl is mixed with 195 mL of 0.667 M NaOH.
Gas tank holds 42kg of gasoline. When gasoline burns, 147kg og oxygen are consumed and carbon dioxide and water are produced. What is the total combined mass of carbon dioxide and water that is produced?
Calculate w (in kJ) when 376 g iron (III) oxide (MM = 159.7 g/mol) reacts with excess carbon to produce carbon dioxide gas at 335 K:
Determine how much Nitrogen gas is consumed if 13.6 grams of FeN are formed in above reaction?
Explain the factors that lead to the third mode being such a poor group frequency. Predict the location in the spectrum of the third fundamental.
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