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Molar mass of a solvent is 68.2 g/mol and a normal freezing point = 31.9 oC. The freezing point depression constant, K f, for this solvent =3.39 oC/m. determine the freezing point of this solution If 18.0 grams of a nonelectrolyte that has molar mass = 44.2 g/mol are combined with 110.0 grams of the solvent,?
A diver at a depth of 100 ft (pressure approximately 3 atm) exhales a small bubble of air with a volume equal to 100 mL. What will be the volume of the bubble (assume the same amount of air) at the surface?
determine what is the observed rate for the given reaction 2 o3g -rarr 3 o2g has an empirically determined rate law
Elements are always arranged in order of increasing atomic weights. Metallic properties increase going from bottom to top in a family of elements.
what mass of Mg is formed from molten MgCl2 if a current of 1.8 amps is passed through the sample for 16.7 hours
The reaction makes more lime at highertemperatures. The reaction goes to completion at 1200. The equilibrium lies far to the right at roomtemperature.
Draw a mechanism to demonstrate how pyridine catalyzes the hydrolysis of acetic anhydride to two molecule of acetic acid. Is this reaction reversible? why or why not?
A gas mixture is made by combining 8.1 g each of Ar, Ne, and an unknown diatomic gas. At STP, the mixture occupies a volume of 19.20 L. What is the molar mass of the unknown gas?
determine the mass of silver phosphate formed when 4.33 g of silver nitrate is reacted with 22.7 ml of .118 m
Make a rough sketch showing how the following properties of a baseball depend on time, from the moment it is hit high into left field to the time it is caught by the outfielder. You may neglect the effects of friction!
how many moles can be produced from 2.5 moles of Ag2CO3 and final temperature of the calorimeter contents is 23.83°C After dissolution of the salt.
What are the products of the reaction of potassium hydride and water. KH(s) + H2O(l) ? A) K(s) + H2(g) + OH-(aq) B) K(s) + H2(g) + O2(g) C) KOH(s) + O2(g) D) K+(aq) + H2(g) + O2(g) E) K+(aq) + H2(g) + OH-(aq)
What is the mass of a single weight (assume one step work) you need to put on a bike pump to take the air in the pump from 1 atmosphere to 9 atmospheres?
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