a scientific study seeks to drill deep into the crust of earth but has difficulty designing a process that will work. why is it difficult to design machine to dig through the crust of earth?

What is an example of a physical property?

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.

Areaction is first order with respect to reactant x and second order with respect to reactant y. which statement describes the rate law for this reaction?