Heated air inside a hot-air balloon causes it to rise into the sky. When the air cools, the balloon returns to the ground. When is the hot air balloon behaving like an air mass in a high-pressure area? In a low-pressure area?

Select the correct answer. which phrase correctly describes temperature? o a. average rotational kinetic energy of the particles in an object o b. average energy of the particles in an object c. average translational kinetic energy of the particles in an object od. all energy possessed by the particles in an object

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

What is the morality of 2.50 l of solution that contains 1.85 mol of anhydrous sodium tetraborate?