What is the kinetic energy of a 5 kg bowling ball rolling down the lane at a velocity of 2 m/s?

Of the groups of elements below, which are most likely to gain electrons to become anions? a. alkali metal b. boron group c. halogen d. transition metal

Idon’t know how to solve this question

What is the molar mass of a gas that has density of 2.054 g/l