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Presume 23.3 g of ClF3(g) as well as 34.3 g of Li(s) are mixed and allowed to respond at atmospheric pressure and 25 C until one of the reactants is used up producing LiCl(s) and LiF(s). Compute the enthalpy change for this reaction keeping in mind that this is a negative number for an exothermic process.
When X rays of wavelength 0.093 nm are diffracted by a metallic crystal, the angle of first-order diffraction (n = 1) is measured to be 15.2 degrees;. What is the distance between the layers of atoms responsible for the diffraction?
nitric acid is usually purchased in concentrated form with a 70.3% HNO3 concentration by mass and a density of 1.14% g/ml. How much of the concentrated stock solution in milliliters should you use to make 2.5L of 0.500 M HNO3.
Consider the following equilibrium at 395 K. The partial pressure of each gas is 0.365 atm. NH4HS(s) NH3(g) + H2S(g)
A water treatment plant has a flowrate of 6,000 m3/d. Determine the following (assume filtration rate is 60 m3/d-m2): a. Total filter area
a beaker containing 250 ml of a 0.500 m solution of acetic acid cooh is added to 125 ml of a 0.850 m solution of sodium
To prepare 5.0 L of a 3.50 M solution of Potassium Hydroxide (KOH), how many grams of Potassium Hydroxide must be used?
Estimate the vapor pressure at 45 degrees C using the Clausius-Clapeyron equation and the two given data points.
Use the Henderson and Hasselbalch equation to calculate the pH of a buffer solution that is 0.45 M in NH4Cl and 0.15 M in NH3
How much energy is required for an electron in a Hydrogen atom to make a transition from the n=2 state to the n=3 state. What is the wavelength of a photon having this energy
1) How many litres of hydrogen gas will be produced by the decomposition of 90 L of water? (Assume that temperature and pressure are constant) Show ALL work.
determine the specific heat of an unknown metal when 25.0 g of the metal initially at 80.0?c is added to 100.0 ml of
Knowing the pH and the value of [H4SiO4(aq)], what is the value of [H3SiO4-(aq)] when the pH=7.0? and when pH=10.0?
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