How many grams of CaH2 are needed to generate 145 L of H2 gas if the pressure of H2 is 823 torrtorr at 20 âC?

How does the motion of particles in a gas change as the gas cools

What type of organic molecule comprises the majority of a potato?

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