20.0 grams of water decomposes into hydrogen gas and oxygen gas through electrolysis. If the percent yield is 80.0%, what mass of oxygen gas is produced?

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