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On the generic phase diagram below, the change from point E to point F describes:  

Convert 1255 mm Hg to atm

The following combination of signs for heat and work (respectively, heat first, work, next in the answer) represents a system that is losing heat to the surroundings and doing work on the surroundings?         

What is the net ionic equation for the following molecular equation? BaCl2(aq) + K2SO4(aq) →   BaSO4(s)+ 2KCl(aq)

A  25 L balloon contains 515 g of xenon at 127oC. Calculate the pressure in the ballon in atm.

Identify the subshell in which electrons with the following quantum numbers are found: n = 4, l = 2  

Which one of these compounds is an ionic compound?

Consider the following balanced reaction:  Mg(s)  +  2HCl(g)  =>  MgCl2(aq) + H2(g) Calculate the volume of H2 produced when 48.62grams of magnesium react with the excess of hydrochloric acid at 20oC and 741mm Hg.  

The following name–formula pair is incorrect:  

A 0.113 g sample of an organic compound with a molar mass of 306.0 g/mol was burned in the bomb calorimeter with a heat capacity of 2.24 kJ/K. The temperature in the calorimeter increased by 3.12 K. Calculate the energy of combustion of the compound in kJ/mol.