❗️URGENT❗️ Witch of the following describes an object that is accelerating?

A. A runner travels 100 meters North at a constant speed

B. A cars velocity changes from 25 m/s to 20 m/s in 5 seconds

C. An airplane changes elevation From 10,000 ft to 5,000 ft.

D. A ball is setting on a soccer
field.

Ahypothrticalax type of ceramic material is known to have a density of 2.10 g/cm3 and a unit cell of cubic symmetry with a cell edge length of 0.57 nm. the atomic weights of the a and x elements are 28.5and 30.0 g/mol, respectively. on the basis of this information, which of the following crystal structures is (are) possible for this material: sodium chloride, cesium chloride, or zinc blende

Write a hypothesis that answers the lesson question, “while observing a chemical reaction, how can you tell which reactant is limiting? ” hypothesis: if a substance is the limiting reactant, then . . because . .

If a polyatomic ionic compound has gained two hydrogen ions, then how does its name begin?