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An aqueous solution is 35 % by mass methylamine (CH3NH2) and has a density of 0.85 g/cm3. What is the pH of the resulting solution if 50 mL of this solution is diluted to 1000 mL? Kb = .00036
At noon on a clear day, sunlight reaches the earth\'s surface at Madison, Wisconsin, with an average power of approximately 5.00 kJ·s-1·m-2. If the sunlight consists of photons with an average wavelength of 510.0 nm
What is the pressure (in atm) inside a container of gas connected to a mercury filled open-end manometer when the level in the arm connected to the container is 28.3cm higher than the level in the arm open to the atmosphere,
What mass of NaOH can this buffer neutralize before the pH rises above 4.00?
Glycine, an amino acid, has the formula C2H5NO2. How many glycine molecules are in 50.0 mg of glycine? a. 7.50 x 101 b. 4.01 x 1023 c. 4.01 x 1020 d. 9.02 x 1023 e. 9.02 x 1020
Metal X was plated from a solution containing cations of X. The passage of 48.25 C deposited 31 mg of X on the cathode. What is the mass of X (in grams) per mole of electrons.
Calculate the pH and the concentrations of all species present H3O+, F-, HF, Cl-, OH- in a solution that contains 0.10 M HF Ka = 3.5*10^-4 and 0.10 M HCl.
Calculate the Mn of the polyisobutene if A 7.5g polymer sample found to discolor 3.4 mL of a 0.05 M solution of Br in CCl4 ?
f the water if brought to the vapour state at 204C and 710 KPa, where its enthalpy is 2649.4 KJ/Kg and its specific volume is 291.8 cm^3/g, what is the internal energy (U) at these conditions in KJ/Kg? c) Calculate the change in internal energy (d..
In an acid-base titration experiment, 50.00 mL of a 0.0500 M solution of acetic acid (ka=1.75 x 10^-5) was titrated with a 0.0500 M solution of NaOH at 25 degree C
How many moles of oxygen are needed to react with 5.0 moles of ammonia? In the above reaction, how many moles of water can be produced from 256 grams of oxygen?
Use the Henderson-Hasselbalch equation to calculate the pH of a solution that is 11.5g of HF and 25.0 g
22.4 liters of a gas weighs 70g at S.T.P. Calculate the weight of the gas if it occupies a volume of 20 liters at 27C and 700mm Hg of pressure
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