9. Salt water has a density of 1.183g/mL. A ball has a density of 0.0134 g/mL. Will the ball float or sink? Explain your answer.

What type of radiation is lead emitting in the following equation? alpha particles beta particles gamma rays

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.

How can the number of core electrons be determined from the periodic table