Blog

Estimate the heat of reaction at 298 K for the reaction shown, given the average bond energies below. Show your work.              Br2(g) + 3F2(g)

If 0.10 mole of HCl is bubbled into 1.0 liter of 0.25 M NH3 solution, what will be the pH of the resulting solution? Show your work. 

An unknown substance was found to have a melting point of ~300 oC and was not soluble in water.  It is a good conductor in both the melt and solid states.  Which of the following substances is the most likely?

Which physical process contributes to the Critical Zone?

What is ‘transformation of living organisms into soil’?

Once placed, an amalgam restoration will remain the exact same size and shape under normal conditions.

What type of stress and strain pushes a material?

Amalgam is strong enough on its own to withstand occlusal forces.

The Food and Drug Administration (FDA) regulates dental materials.

A 38-year-old female patient is referred to physical therapy. During the initial evaluation, the patient reports experiencing intermittent blurred vision, difficulty walking, and frequent fatigue. The patient’s medical history reveals episodes of muscle weakness and sensory changes that have come and gone over the past few months. The physical therapist observes bilateral lower extremity weakness, abnormal gait pattern, and diminished vibration sense. Based on the provided patient history and examination findings, which pathology is MOST likely given her presentation?