Which is one way that Earth’s atmosphere supports life? It filters out oxygen.
It keeps Earth warm.
It increases UV radiation.
It provides a solid shield.

Asample of radium-226 will decay 1/4 of its original amount after 3200years. what is the half-life of radium-226?

An electrons position cannot be known precisely only it's probability of being in a certain location can be known

Consider this equilibrium: n29) + o2(g) + 2no(c).nitrogen gas and oxygen gas react when placed in a closed container. as the reaction proceeds towards equilibrium, what happens to the rate of thereverse reaction?