What is the definition of entropy?
a system that can exchange both matter and energy with its surroundings
a measure of the overall disorder of a system
a quantity that measures the overall spontaneity of a reaction
a process that will proceed without continuous external influence

Look at the reaction below: ca(hco3)2 --> caco3 + co2 + h2o first, balance the reaction. once balanced, use dimensional analysis or another method to find out how many moles of carbon dioxide will be produced if we start with 16.5 moles of calcium bicarbonate (calcium hydrogen carbonate). = mol of co2 number needs to be reported to three significant figures.

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.

Avariable that is not being directly tested during an experiment should be