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A 0.025 g sample of H2O is injected into a 1.00 L flask at 30.0 °C. What forms of water will be present at equilibrium? Vapor pressure of water at 30.0 °C is 31.8 mm Hg.
What is the concentration of toluene in air produced by vaporizing 1 ml of liquid toluene into clean air to produce a total volume of 100 liters
a block which weighs 50.0g is put in bromoform. bromoforms density 2.890 gcm3. assume that the block is 40.0
Given that the standard free energy of formation of MCl2(s) and MO2(s) are, respectively, -311.5 and -286.5 kJ/mol at 25o C. What is the standard change in free energy (kJ) for the following reaction
14 g of nitrogen is reacted with 6.0 g of hydrogen to produce 9 g of ammonia according to the chemical equation shown below. Determine the limiting reactant, theoretical yield of ammonia in grams, and percent yield of ammonia.
A 2.06-g sample of zinc was placed into 146 mL of 3.88 M HCl and the hydrogen generated was collected over water at 24 oC. Atmospheric pressure was 764 mm Hg. What was the total volume of hydrogen collected
After 61.0min, 19.0% of a compound has decomposed. Explain what is the half-life of this reaction assuming first-order kinetics
A student is given an antacid tablet that weighed 5.6832g. The tablet was crushed and 4.3628 g of the antacid was added to 200mL of simulated "stomach acid". This was allowed to react and then filtered.
a 10m solution. 20 g of solute was dissolved in 100 ml of water.what is the molecular weight of the solute used in the
A spring loaded piston cylinder device is initially filled with 0.2 lbm of an R-134a liquid vapor mixture whose temperature is -30 deg F and whose quality is 80 percent. The spring constant in the spring force relation F=kx is 37 lbf/in
How do you solve this? what formulas do you need? how do you go from n=3 to n=5? what frequency of light is required to cause an electron in the helium ion (He+) to undergo a transition from level n=3 to level n=5?
A solution contains 10.0 g of KOH and 900.0 mL of water. The volume of the solution is 904.7 mL. (A) Which component of the solution is the solute? Which is the solvent? (B) What is the molarity of the solution? C) What is the weight percent of KO..
A farmer applies 1400.0 kg of a fertilizer that contains 10.0% nitrogen to his fields each year. 15.0% of the fertilizer washes into a river that flows through the farm.
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