Ablank can be separated by filtration

The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.

How many moles of bromine are needed to produce 3.23 moles of potassium bromide

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