1. For simplicity, suppose a grain of sand is a cube that is 0.2 millimeter on each edge. About how many grains of sand packed tightly together would it take to
make a beach 300 meters long, 25 meters wide, and 5 meters deep?

What is the percent by mass of oxygen in fe2o3

Word equation for k(s)+h2o(l) yield koh(aq) + h2(g)

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