Calcium is a .

a. nonmetal
b. noble gas
c. light metal
d. heavy metal

What is the value of keq for the reaction expressed in scientific notation?

What was bohr’s contribution to the planetary model

What is the typical rotational frequency frot for a molecule like n2 at room temperature (25∘c)? assume that d for this molecule is 1å=10−10m. take the total mass of an n2 molecule to be mn2=4.65×10−26kg. you will need to account for rotations around two axes (not just one) to find the correct frequency. express frot numerically in hertz, to three significant figures.