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How much pressure needs to applied to a volume of helium in order to reduce it's volume from 100mL to 40 mL?
Inspection of an IR spectrum rarely reveals the identity of the compound. However, one can often identify what?
The pH of a saturated solution of nickel hydroxide, Ni(OH)2, is 8.83. Calculate the Ksp for nickel hydroxide.
A chemist needs a buffer with a pH of 4.35. How many mLs of pure acetic acid (density=1.049 g/mL) must be added to 465 mL of 0.0941 M NaOH solution to obtain such a buffer
the bottom layer was removed, and the aqueous layers were combined. HCl (2M) was added to the aqueous layer with stirring to acidify the solution. The solid was collected by suction filtration and then air-dried. What is the overall reaction and w..
what is the freezing point of an aqueous solution that has 25.0 g of glucose, C6H12O6 per 100.0g H2O (Kf=186C/M)
The crossed aldol condensation of acetaldehyde with benzaldehyde is aided by the fact that benzaldehyde bears no α-protons. However, a possible competitive reaction is the “selfcondensation†of two molecules of acetaldehyde.
a water soluble salt forms a precipitant during Group 3 analysis. An acidic solution of this precipitant and NaBiO3 yields a pinkish color. This same salt has no reaction to concentrated H2SO4 or AgNO3, what is the chemical formula for this salt?
Label the stronger cojugate base [A] H3PO4; phosphoric acid; Ka= 7.5 X 10^-3 or HCOOH; Formaric acid; Ka= 1.8 x 10^-4 [B] CHOOH; Formaric acid; Ka=1.8 x 10^-4; or C6H5COOH; benzoic Acid; Ka= 6.5 x 10^-5
Ammonium sulfide in solid form decomposes to ammonia gas and hydrogen sulfide gas. It is a reversible reaction The Kp at 25 degrees C is .109 In an experiment Ammonia gas and hydrogen sulfide gas each have a partial pressure of .5 atmospheres and ..
A graduated cylinder contains 155 g of water. A 11.0 g piece of iron (density = 7.86 g/cm^3) and a 16.0 g piece of lead are added. What is the new water level in the cylinder?
The activation energy for a particular reaction is Ea = 14.20 kJ. What percentage of the molecules are at or above the activation energy at 500.0 K
Draw a reasonable Lewis structure for POCl3. Assign formal charges for the atoms in your Lewis structure. Draw a second legitimate resonance contributor for POCl3
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