Solve the problems. Express each answer to the correct number of significant figures. Type the correct answer in each box. (1.20 x 10^4) x (2.152 x 10^2) = ? x 10^6 208/5.3 = ?​

Determine the number o moles of ions/atoms/particle in the following: 2.50 miles of k2s (let me know how to do)

What happens when an acid dissolves?

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.