What drives the rising and sinking of air in the Hadley cell between 0° and 30° latitude?

In the “selfish herd” model, individuals in a group benefit because each reduces its personal predation risk by moving toward the center of the herd.

The solubility of nitrogen gas at 25°C and a nitrogen pressure of 522 mmHg is 4.7 × 10–4 mol/L. What is the value of the Henry’s Law constant in mol/L·atm?

A solution is prepared by adding 40.3 g of Mg(NO3)2 to 127 g of water. Calculate the mole fraction and molality of magnesium nitrate in this solution.

Which of the following gases is expected to have a higher solubility in water than what is predicted using Henry’s law?

Potassium bromide, KBr, crystallizes like NaCl in a face-centered lattice. The ionic radii of K+ and Br– ions are 133 pm and 195 pm, respectively. Assuming that all Br– ions are positioned in the face and corners of the unit cell, while the K+ ions are positioned along the edge alternating between anions, calculate the length of a unit cell edge.

A nurse is reinforcing perioperative teaching with an adolescent client and their parents who is scheduled for spinal instrumentation for scoliosis. Which of the following statement by the adolescent indicates understanding?

The nurse is preparing to admit a 3-year-old with intussusception. Which of the following clinical manifestations would the nurse expect to observe? Select all that apply.

A 4-year-old child with a hip spica cast is being prepared for discharge. Discharge teaching and instructions have been provided throughout the hospitalization. Which statement by the mother indicates the need for additional teaching?

The nurse is educating a group of newly licensed nurses on the care of child with pinworms. Which statement made by a new nurse indicates the need for further teaching?