How many mL of 0.400 M KCl would be required to make a 0.0400 M solution of KCl when diluted to 200.0 mL with water?

The first element on the periodic table of elements is carbon. a. true b. false

What’s the scientific notation for the number 6,840,000,000

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.