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How many liters of ammonia gas can be formed from the reaction of 150 L of hydrogen gas? Assume that there is complete reaction of hydrogen gas with nitrogen gas.
Calculate the hydronium ion concentration and the pH after the addition of 0.25 mL of 0.10 M HCl to each one. What accounts for the difference in the hydronium ion concentrations?
Consider the reaction CO(g) + 2H2(g) CH3OH(l) at 25°C. Calculate value of the equilibrium constant (Kp) for this reaction at 25°C.
An oxygen gas tank has a volume of 8 L and a pressure of 1500 N/m2. If the temperature decreases from 2500 K to 2000 K and its volume increases to 24 L, what is its final pressure?
The Arrhenius equation, k = Ae-E/RT expresses the relationship between the reaction rate constant, k, and the energy of activation, E. The probability that colliding molecules will react?
An empty flask has a mass of 123.4 g. When the flask is filled with water, the mass is 211.6 g. If 10.0 g of zinc (d = 7.14 g/cm3) are added to the flask filled with water (and the sides of the fla
Which concentration is consistent with a basic solution?
What is the molarity of a solution when 2.25 g NaF is dissolved in enough water to make 250.0 mL of solution?
What mass of ethanol, C2H5OH (a non-electrolyte), must be added to 10.0 L of water to obtain a solution that freezes at -10 ° C? Assuming that the density of water is 1.0 g / mL.
If Kb for NX3 is 6.5 x 10-6, what is the percent ionization of a 0.325 M aqueous solution of NX3?
Arrange the following bonds in order of increasing bond strength.
Find % dissociation and pH of a solution that is 1.0 M acetic acid and 1.0 M sodium acetate. Find the pH of 0.75 M lactic acid and 0.25 M sodium lactate (Ka = 1.4 x 10-4)
When a 24.8-g sample of ethyl alcohol (molar mass = 46.07 g/mol) is burned, how much energy is released as heat? Show your calculations.
What is the lewis dot structure of iodoethane?
The alpha particles emitted by radon-222 have an energy of 8.8 x 10^-13 J. If a 200 g Pb brick absorbs 1.0 x 10^10 alpha particles from radon decay, what dose in radian will the brick absorb?
When 0.100g of graphite is burned completely in a bomb calorimeter(heat capacity =3.344kJ/? C), containing 3000 g of water, atemperature rise of 0.21? C is observed. What is ?E for the combustion of
Using the balanced equation of BaCl2 + 2AgNO3 => 2AgCl + Ba(NO3)2, answer the following questions: What mass of AgNO3, in grams, is required for complete reaction with 0.156 g of BaCl2? What mas
The reaction is second order in and first order in . When 4.9×10-2 and 2.5×10-2 , the observed rate of disappearance of is 8.7×10-5. What is the rate of disappearance of at this m
Given the following chemical reaction, how many mL of 0.25 M Ca(OH)2 are needed to completely neutralize 30 mL of 0.625 M H3PO4? (Hint, you'll need to balance it first.)
What is the overall cell potential? If sulfuric acid is then added to the Pb(NO3)2 (aq) solution, thereby forming a precipitate of PbSo4, what will happen to the cell potential?
What is the change in enthalpy at 25°C and 1 atm for the production of 5.00 mol SnO(s)?
In the reaction MnO4- + 8H+ + 5e- ⇔ Mn2+ + 4H20, the manganese in 3.95 grams of KMnO4 is reduced to Mn2+. How many coulombs of charge must have been transferred to the permanganate ion?
A rigid tank with a volume of 2.5 m3 contains 15 kg of saturated liquid-vapor mixture of water at 75 .C . The water is heated. Determine the temperature at which the liquid in the tank is completely
Zinc is extracted from its ore by heating with carbon in the blast furnace. How much zinc oxide do you need to make 130 g of zinc?