Which two elements have the same number of valence electrons?

Na and Sr

Zr and H

O and S

Mg and P

Does a compound with a stronger hydrogen bond than water have a higher specific heat than water?

What types of volcanic landforms occur at divergent plate boundaries

Which kind of bonds are found in a sample

45.3 in. to millimeters

When ethanol (C2H6O (aq)) is consumed, it reacts with oxygen gas (O2) in the body to produce gaseous carbon dioxide and liquid water. Enter the balanced chemical equation for the reaction

A closed flask contains water at 70 deg C. The total pressure of the air-and-water-vapor mixture is 500.0 torr. What is the partial pressure (in torr) of the air in this flask? Use your book for the vapor pressure of water at this temperature.

What was the approximate overall change in the carbon dioxide content between 1900 and 1962?

What mass of nitrogen Dioxide, NO2, would be produced by the decomposition of 75.0g of copper (II) nitrate?

A tube that carries air from the larynx to the lungs is called

How many electrons should be shown in the lewis symbol for hydrogen?