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How many grams of mercury(II) oxide are needed to produce 3.05 L of oxygen gas according to the following reaction at 25 C and 1 atm?
mercury(II) oxide (s)------ mercury (l) + oxygen (g)
When 35.6 L ammonia and 40.5 L oxygen gas react at STP, NO(g) and water are produced. How many grams of NO(g) are produced assuming 100% yield?
Which of the following involve an increase in the entropy of the system under consideration?
What volume will nitrogen gas occupy if the pressure is increased to 894 torr at constant temperature?
Trouble understanding the relationship between the Ka and how acidic a chemical is. Is it safe to say that the more acidic a chemical is the higher the Ka value will be
A saline solution used in intravenous drips for patients who cannot take oral fluids contains 0.92% (w/v) NaCl in water. How many grams of NaCl are contained in 729 mL of this solution.
A solution is prepared by mixing 50.0 mL of 0.11 M Pb(NO3)2 with 50.0 mL of 1.3 M KCl. Calculate the concentrations of Pb2+ and Cl - at equilibrium. Ksp for PbCl2(s) is 1.6* 10-5.
Iodine-131 is used in medicine to assess thyroid gland function. How many protons and neutrons are present in an iodine-131 atom?
Predict the outcome of reactions that occur when a solution having [Cu2+]/[Fe2+] = 10 comes in contact with hydrotroilite (FeS). What will be the ratio of [Cu2+]/[Fe2+] in the solution after equilibrium is established?
Draw all resonance structures for anisole to show why the methoxy group directs incoming electrophiles
Calculate the mass of Nitrogen at room temperature dissolved at room temperature in an 80 L aquarium. Assume a total pressure of 1 atm and .78 mole fraction.
If the barometric pressure is 741 mmHg, and if h = 53. 0 mm, what is the pressure of the gas, expressed in atm and in kilopascals, if the substance in the tube is mercury having a density of 13.6 g/mL.
Consider the dissolution of CaCl2. CaCl2(s) Ca2+(aq) + 2 Cl-(aq) ΔH = -81.5 kJ A 13.2 g sample of CaCl2 is dissolved in 106 g of water, with both substances at 25.0°C.
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