What are the characteristics distinguishes helium (He) from the other noble gases

A. Helium has two valence electrons

B. Helium has a milky-white color

C. Helium has a strong odor

D. Helium is highly reactive

What are the laws of physics?

A person walks 5.0kilometers north, then 5.0 kilometers east. His displacement is closest to? A. 10 kilometers northwest B. 7.1 kilometers northwest C. 10 kilometers northeast D. 7.1 kilometers northeast

What might happen to the continents if the Atlantic Ocean continues to expand because of movement along this ridge?

Calculate the buoyant force (in N) on a 1.0 m^3 chunk of brass submerged in a bath of mercury.

Which interaction can result in a wave that has a larger or a smaller amplitude than the original waves?

Select all of the answers that apply. What conditions on Earth are unique from other planets in our solar system?

Which is a chemical change

A 20-N falling object encounters 4 N of air resistance. The magnitude of the net force on the object is?

What is the electrical power when the current is 25 amps and the voltage is 10 volts?

A cyclist rides her bike 7 mi east, and then 2 mi north before taking a break. Then she rides 5 mi east and then 3 mi north. What are the magnitude and direction of the cyclist's resultant displacement? magnitude: 13.0 mi; direction: 22.