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Is it possible for the activation energy of a reaction to be negative? Define conclusion and provide a molecular interpretation
sand and iron particales that are similar in size and color are mixed together in a beaker. what would be the best
A 0.00445 mol sample of a weak acid, HY, is dissolved in enough water to form 0.0976 L of solution. If the pH of the solution is 4.02, what is the Ka of HY? Use E notation with 3 significant figures.
a 35.00 ml solution of 0.2500 m hf is titrated with a standardized 0.1356 m solution of naoh at 25 c.a what is the ph
An aqueous solution contains 12.5% NaCl by mass. What mass of water (in grams)is contained in 2.5L of the vapor above this solution at 55 celcius? the vaor pressure of pure water at 55 celcius is 118 torr.
Atoms of an unknown element have the following masses and percent abundance: 90.92% of the atoms have a mass of 19.988 u, 0.26% of the atoms have a mass of 20.983 u, and 8.82% of atoms have a mass of 21.978 u.
Assemble the alcohols (have the formula of C4H10) in the order of increasing reactivity with concentrated HCl.
constitutionally isomeric ketones that have the molecular formula C4H8O2
The density of lead is 11.3 . The water level in a graduated cylinder initially at 205 rises to 290 after a piece of lead is submerged. What is the mass in grams of the lead?
what effect would changing the concentration of para-toluenesulfonic acid have on the position of the equilibrium
How many grams of sodium formate, NaCHO2, would have to be dissolved in 1.1 L of 0.20 M formic acid (pKa 3.74) to make the solution a buffer for pH 3.82
Using graphical techniques, which form of chlorendic acid (neutral, mono-anionic, or di-anionic) is not responsible for the inhibitory effect
Triethylene glycol, the solvent for your first reaction, and heavy mineral oil are both high boiling, high molecular weight solvents.
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