A piece of sodium metal undergoes complete reaction with water as follows:  2 Na (s)  +   2 H2O (l)  ——->   2 NaOH (aq)  +   H2(g)  The hydrogen gas is collected over water at 25oC.  The volume of gas is 246 mL measured at 1 atm.  Calculate the number of grams of Na used in the reaction.  (vapor pressure of water = 0.0313 atm)

A student performs the lab on an unknown metal and obtains the following data: Measurement Result Mass of metal (g) 0.0285 g Temperature of laboratory (°C) 21°C Volume of H2 gas produced (mL) 26.5 mL Gas Constant R 0.08206 (L atm)/(mol K) Pressure in Laboratory (atm) P 0.975 atm Using this data, complete the following calculations:   Molar ratio of H:M assuming a 1:1 ratio of M to H2. We will assume a 1:1 molar ratio for this experiment. Atomic mass of metal = ________________

Upon measuring PROM of shoulder flexion, there is a hard end feel and the patient achieves 150° of motion. What can be interpreted about this test?

A 58-year-old patient is recovering from a left total hip replacement. The patient is allowed to bear weight as tolerated on the left leg but reports mild discomfort when walking. Which of the following gait patterns would be MOST appropriate for this patient using a walker?

To differentiate between latissimus dorsi stiffness and posterior scapulohumeral muscle stiffness, which of the following factors should be considered?

When performing shoulder flexion ROM assessment, where should the axis of the goniometer be aligned?

Your patient has non–weight bearing (NWB) post-operative orders from the surgeon. This gait pattern can be performed with which of the following ambulatory assistive devices?

What is the normal range of motion (ROM) for shoulder abduction?

During shoulder medial rotation ROM, which arm of the goniometer should be perpendicular to the floor?

The _________ nervous system is composed of the brain and spinal cord