Which could be a possible molecular formula of c4h9?

Using the periodic table, complete the table to describe each atom. type in your answers. a ? b? c? d? e? f?

May someone me with these science questions

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