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A 4.305-gram sample of a nonelectrolyte is dissolved in 105 grams of water. The solution freezes at -1.23°C. Calculate the molecular weight of the solute. Kf for water = 1.86°C/m.
39.7 g/mol
58.4 g/mol
46.2 g/mol
62.0 g/mol
74.2 g/mol
Super-green is an indicator with a Ka of 1.6 × 10-7. The acid form is yellow and the base form is blue. Awesome-orange is an indicator with a Ka of 5.0 × 10-5.
A mixture of 3.50 moles of B and 5.25 moles of C in a 20.0 L container is allowed to come to equalibrium. What is the equalibrium concentration of A?
which of the following will be more soluble in acidic solution than in pure water?
Heptane can appear harmless, but when ignited, it explodes violently. What is the first law of thermodynamic?
Calculate what the limiting reactant is in the reaction between copper (II) oxide and hydrochloric acid
A hot-air balloon has a volume of 875 L. What is the original temperature of the balloon if its volume changes to 955 L when heated to 56 degrees celcius
How many grams of ammonium sulfate should be dissolved in 160 ml of water for the preparation
use curved arrows to show the flow of electrons in each step, and note any relevant charges or lone pairs of electrons.
Consider the titration of 50.0 mL of 0.200 M HOCl by 0.200 M KOH for the next five questions (Ka for HOCl = 3.5 x 10-8). Calculate all pH values to two decimal places.
What are the protons and neutrons that are emitted from a helium atom called? Atomic mass is expressed in atm.
Explain how this reaction at equilibrium responds to the addition of heat? Please include any logic for why the reaction is endothermic or exothermic,
22.5ml of .383 molar H2SO4 is required to completely neutralize 20ml of KOH solution. What is the molarity of the KOH solution?
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