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A litre of solution containing 0.1 M of CH3COOH and 0.1 M of CH3COONa provides a buffer of pH 4.74 . calculate the pH of a solution after the addition of 0.02 M of NaOH . The dissociation constant of CH3COOH is 4.75x10-5.
Should you install a solar water heater? The average home has a 200 liter hot-water tank, which is effectively drained and replenished three times per day.
how many grams of C6H12O6 must be added to 250g of water to lower the vapor pressure by 1.30mm Hg at 40C degrees? the vapor pressure of water at 40C degrees is 55.3mm Hg.
2A(g) + 3B(g) → A2B3(g) If 0.5 atm of gas A is mixed in an evacuated reaction flask with 1.0 atm of gas B, what is the final pressure in the reaction flask? (assume that the reaction goes to completion)
Show whether or not precipitate will form in this process when the Ksp of Pbl = 9.8*10 -9
Consider the following reaction: CO(g)+H2O(g)in equilibrium with CO2(g)+H2
If 125 cal of heat is applied to a 60.0 g piece of copper at 24C, what will the final temperature be? The specific heat of copper is 0.0920cal/(g x C).
each successive hydrogen is more easily substituted until the trihalo species is obtained. Explain
White phosphorus is a molecular solid made of molecules of P4. A 3.88 g sample of white phosphorus starts at 24oC. Calculate the amount of heat (in J) required to melt the sample.
What is the mass in grams of 2.75 moles of CH4, How many moles are in 365 grams of K2SO4.
What is the wavelength (in meters) of a proton (mass = 1.673*10^-24 g) that has been accelerated to 30% of the speed of light.
Determine how many moles of each product would form and Considering the given equation
A 28.5 g sample of an unknown metal is heated to 95.0C and then dropped into 58.0 g of water in a coffee-cup calorimeter. The temperature of the water rises from 23.5 C to 27.1C.
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