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In a closed container, consider treating 1.0 mols CaCO3(s) with 1.0 L of 0.50 M HCl. After all reactions of consequence occur and equilibrium is established, solubility for CaCO3 in this system is much less than solubility for CaCO3 in water even though this system is considerably more acidic than the CaCO3/water system. Provide a brief, qualitative, chemically-sound explanation of these facts.
You collected a water sample from your shower containing 3.2mM Ca2+ and 1.1 mM Mg2+ whats the hardness of water in terms of CaCO3/L.
A buffer (pH 3.70) was prepared by mixing 1.00 mole of formic acid and 1.00 mole of sodium formate to form an aqueous solution with a total volume of 1.00 L.
Number of Moles and Conversion, a) Number of moles of carbon atoms in 0.585 moles C4H10
A solution has an H3O1+ concentration of 1.7 10-2 M. What is the hydroxide ion concentration?
Write the electron configuration of the alkali metal (M) that reacts with oxygen to yield an oxide, M2O, if 3.54 g of the metal reacts
What is a significant obstacle when using osmometry to determine molar masses for compounds with very high molar masses? A. The osmotic pressures may be too high to measure.
the final temperature of both the water and metal is 32.81 degrees C. The specific heat of water is 4.184j/g*K. What is the speciic heat of the metal?
An oil is partially hydrogenated, What happens to some of the cis double bonds during hydrogenation?
What is the mass/vol % ethanol in an ethanol-water solution with a density of 0.875 g/mL and containing 65.0% ethanol by volume. The density of pure ethanol is 0.789 g/mL
Concentrated HCl was added to a Ca(OH)2 suspension (in water) and the precipitate dissolved. Explain this observation on the basis of a Le Chatelier's shift in the equilibrium.
When a metal was exposed to light at a frequency of 3.94× 1015 s-1, electrons were emitted with a kinetic energy of 5.80× 10-19 J. What is the maximum number of electrons that could be ejected from this metal
The laser beams are tightly focused. They briefly (for 0.5s) exert enough pressure to confine 500sodium atoms in a vloume of 1.0x10^-15m^3. The temperature of this gas is 0.00024K, the lowest temperature ever reached for a gas. Compute the root-me..
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