What is the electron configuration for a neutral atom of selenium? For a neutral atom of beryllium?

Which energy change best relates to a boulder that is rolling down the side of a hill?

You are on an alien planet where the names for substances and the units of measures are very unfamiliar. Nonetheless, you obtain 92 quibs of a substance called skvarnick.

Elastic energy is stored when an object is stretched. Is this an example of potential or kinetic energy? A. Neither B. Both d C. Kinetic O D. Potential Reset Selection

The word equation for the formation of water would be: hydrogen + oxygen - - > water. A hydrogen molecule (H2) and an oxygen molecule (O2) are the reactants. Water (H2O) is the product.

Why are older parts of the ocean floor no older than about 200 million years?

2CO + 2NO yields 2CO2 + N2 which element was oxidized

What what is any harm to the physical chemical or biological health of the ocean ecosystem

In what pH range do most biochemical reaction occur

Which formula equation shows a reversible reaction? a. 2Na+F2-> 2NaF b. CaCO3-> CaO+CO2 c. NH4CI (s) - -NH3 ( g.+HCI ( g. 2H2O2 (aq) - pt-> 2H2O (I) + O2 (g)

When a sample of gas is cooled in a sealed, rigid container, the pressure the gas exerts on the walls of the container will decrease because the gas particles hit the walls of the container (1) less often and with less force (2) less often and with