Which formula represents a hydronium ion?

(1) H3O + (3) OH-

(2) NH4 + (4) HCO3-

Give three examples of mixtures, and tell whether each one is homogeneous or heterogeneous. Give three examples of compounds.

Which is also called an alpha particle? the nucleus of a carbon atom the nucleus of a nitrogen atom the nucleus of a hydrogen atom the nucleus of a helium atom

Full form of pH exact

In a polar, covalent bond, why might one area of a molecule be more negative than other areas of the molecule? A. The atoms transfer electrons; therefore, that atom lost its electrons. B.

If HI were 100% ionic, then the charge would be Q=1.60*10-19 C. Using the equation μ=Q*r calculate μ, the expected dipole of HI. Be sure to convert the bond distance, r=161 pm, to meters.

How have humans negatively impacted biodiversity?

Michael mixes two chemicals together in a beaker. The chemicals change color, and the beaker heats up quickly. What kind of change most likely occurred? A chemical change occurred. Only a physical change occurred. A mixture formed.

What type of wave contains compression and rarefaction

What is the science of stratigraphy

The deviation from ideal behavior of a gas is most evident at [x] and/or low temperature. The van der Waals equation corrects the ideal gas law for the finite volume and [y] of gas molecules. True / False.