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A 15.25 gram sample of copper primarily at 92 degrees is added to a container containing water. The final temperature of the metal is 26.21oC. Explain what is the total amount of energy in Joules added to the water? Explain what was the energy lost by the metal?
The Ksp for silver sulfate (Ag2SO4) is 1.2 * 10^-5. Calculate the solubility of silver sulfate in each of the following.
A 50.0mL sample of 0.0240 M NH3(aq) is titrated with aqueous HCl. What is the pH after the addition of 15.0mL of 0.0600 M HCl(aq) kb of NH3= 1.8x10^-5.
150g sample of a pure compound subjected to catalytic hydrogenation takes up 25.0mL of H2 at 25 degrees Celsius and 1atm pressure. Compute the molecular weight of the compound presume that it has only one double bond.
What is the pH at the stoichiometric point (end point) for the titration of 50 ml of 0.20 M methyl amine CH3NH2 (aq) with 0.20 M perchloric acid HClO4(aq)? For methyl amine (CH3NH2), Kb = 3.6 x 10^-4.
What is the concentration of the HNO3 solution? Your response differs from the correct answer by more than 10%. Double check your calculations. M (b) How many moles of NaOH were in excess after the first addition?
Methyl Orange is an acid-base indicator. In dilute solution, at pH greater than 4.4, it is yellow. At pH=3.2 the solution appears red. Draw a structure of the species that is formed at the lower pH of the acid proton adds to the azo nitrogen atom ..
Consider a house into which radon is emitted through cracks in the basement. The total volume of the house is 650 m3 (assume that the volume is well mixed throughout).
in the procedure for determining the fragrances it suggests that the organic layer dropped onto the watch glass should
draw the structures of methyl salicylate and say what evidence indicates that methyl salicylate was formed. draw the
what is the problem of attempting an Adols condensation using different aldehydes
A shelf containing several chemicals (Salicylic acid, 4-(4-Hydroxyphenyl)butan-2-one {a.k.a. Raspberry Ketone} and 4-methylaniline) fell and the vials shattered.
Give at least 5 members (ions) of the same isoelectronic series as neon. Arrange them in order of smallest ionic radius to largest ionic radius.
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