Why do astronauts on the moon seem like they're "Walking on springs" while on earth we are firmly attached to the ground

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.

What is the chemical name of the compound na2co3? use the list of polyatomic ions and the periodic table to you answer. a. sodium carbon oxide b. sodium carbonate c. sodium(ll) carbonate d. sodium oxalate

How many moles of potassium hydroxide are needed to completely react with 2.94 moles of aluminum sulfate