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Bond energy of O2 is 0.494 MJ/mole. What is the wavelength of light that has enough energy to break the O2 bond? What do you call the wavelength range of this photon?
a solid block of exactly 100.0 cm cubed has a mass of 153.6g. Determine its density.Will the block sink or float on water.
What reacts with pentene to give you Pentyne. There are to reagents to complete the reaction.
Zinc metal can be obtained from zinc oxide (ZnO) by reacting the oxide with the element carbon. The products of the reaction are Zn and CO2.
H2S (aq) is a polyprotic acid, meaning it can dissociate its hydrogen ion more than once. However, HS- (given its negative charge as well as its extra hydrogen ion) can act as either a base or an acid
To determine its identity, 0.150g of the unknown was dissolved using 10.00ml, 0.531 M HCl. Three drops of methyl orange was added to the solution and then titrated with 0.2440 M NaOH.
given the mass of chlorine as 26.0g and mass of aluminium as 31.0g. if you had excess chlorine how many moles of of
Electrical conductivity measurements show that 0.050 M acetic acid is 1.9% dissociated at 25* C. Calculate pKa and Ka for acetic acid.
Balanced equations for the reaction of resorcinol in water, resorcinol in toluene, and resorcinol in hexanes. Balanced equations for the reaction of anthracene in the same three solvents.
The rate constant for the second- order reaction.starting with a concentration of 0.86m, calculate the concentration of NOBr after 57s.
determine what is the density of the oxygen gas in the full bottle if a cylindrical gas lecture bottle has internal
A compound A (C6H6) undergoes catalytic hydrogenation over Lindlar catalyst to give a compound B, which in turn undergoes ozonolysis followed by workup with aqueous H2O2 to yield succinic acid and two equivalents of formic acid.
Write the Henderson-Hasselbalch equation for a solution of propanoic acid (CH3CH2CO2H, pKa = 4.874 ) using HA and A- in the expression. Using this equation, calculate the quotient [A-]/[HA] at A) pH 4.01 B) pH 4.874 C) pH 5.20
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