Determine the molar mass of the following elements. include units in your answer. a) flourine (f): b) nitrogen (n): c) helium (he) : d) carbon (c): e) oxygen (o): f) beryllium (be):

Compare and contrast physical changes with chemical changes.

Mercury metal is poured into a graduated cylinder that holds exactly 22.5 ml the mercury used to fill the cylinder mass in 306.0 g from this information calculate the density of mercury

Which of these is an example of pseudoscience? a) predicting the time of sunrise based on data on position of earth b) predicting the date of the moon phases based on data on position of earth c) predicting eclipses based on the position of the sun and the moon d) predicting future events in a person's life based on the position of the moon