250 kJ of energy is removed from a 400 g sample of water at 60°C, Will the sample of water completely freeze? Explain.

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Calculate the h3o+ concentration in a solution of acetic acid if the concentration of molecular acetic acid present at equilibrium is 9.97x10^-3 m and k for the dissociation is 1.86x10^-5. ch3cooh(aq)+h2o(> h3o^+(aq)+ch3coo^-(aq)

Using data from seismic waves, geologists have learned that earth’s interior is made up of several

What does the symbol (–hfus) indicate in a phase change?