A chemist measures the amount of hydrogen gas produced during an experiment. She finds that 64.7 g of hydrogen gas is produced. Calculate the number of moles of hydrogen gas produced. Round your answer to 3 significant digits.

Amount of liquid measured in l or lm

Which of the following electromagnetic waves can create ions?

1) describe the physical layout of the ocean floor ? 2) explain how the dumbo octopus swims differently than other octopus species and why this would be an advantage in the aphonic zone . 3) why are the types of organisms that live at each underwater hot vent so dramatically different ?