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Write the formulas of the conjugate base of the following acids: a) HNO2 b) H2SO4 c) H2S d) HCN e) HCOOH
The heat of combustion of naphthalene (C10H8) is - 5157 kJ/mol. Using these data and data in Appendix C, calculate the heat of hydrogenation of naphthalene.
Benzene is a organic solvent with the formula, The volume occupied by 1 micromole of liquid benzene and the volume occupied by 1 megamole of benzene as a vapor at STP (assume an ideal gas)
3.10 percent of the Br2 undergoes dissociation. Calculate the equilibrium constant Kc for the reaction.
calculate the ph of a solution formed by mixing 250.0 ml of 0.15 m nh4cl with 100.0 ml of 0.20 m nh3. the kb for nh3 is
a)the air from a large building at 68C. b) the air froma small house at 68C. c)the air from a small room temperature at 71C
so2 no2-----so3 noif the kc for the reaction is 2.50 what are the equilirium concentrations of the products if the
the freezing point of benzene is 5.5oc. what is the freezing point depression of a solution of 5.00 g naphthalene c10h8
PH of solution during titration process, Q1: What is the pH of a 0.35 M solution of a weak acid HA with Ka = 1.41×10^-8?
15.0 mL of 0.50 M HCl is added to a 100.-mL sample of 0.496 M HNO2 (Ka for HNO2 = 4.0 × 10-4). What is the equilibrium concentration of NO2- ions?
Magnesium carbonate, MgCO3, has a Ksp value of 6.80×10?6 . What happens when magnesium and carbonate solutions are mixed to give 2.50×10?3M Mg2+ and 2.00×10?3M CO3 2-?
How many grams of oxygen are collected in a reaction where 235 mL of oxygen gas is collected over water at a temperature of 25 ^circ {rm C} and a total pressure of 704 torr?
Cyclopropane has significantly less angle strain than cyclopropane, yet is only slightly lower in energy. How can this be true? How does this information relate to the fact that cyclobutane is not a planar molecule
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