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Give the correct answer for the following problem with the correct number of significant figures. (13.7 + 0.027)  / 8.221      a.  1.7      b.  1.67      c.  1.670      d. 1.703    

. Which one of the following contributes to the charge, but does NOT contribute significantly to the mass of an atom?    

 Which process is found both in wine-making and bread-making?

Which source of renewable energy has seen the greatest growth in the last decade?  

The molecules that are added to polymers to make them softer and more pliable are known as  

¿Qué es? Write a sentence that clearly demonstrates the meaning of each of the items on the list. You can use your imagination, but your sentences must be logical. (10 x 2 pts. each = 20 pts.) Modelohacer diligenciasHago diligencias los sábados: voy al banco, al supermercado y a la lavandería. Reference: ¿Qué es? el banco

. The number 0.02100 is properly expressed in scientific notation as a. 0.21 X 10‑1 b. 2.1 X 10‑2 c.   2.100 X 10‑2 d.  21.0 ´X 10‑3            

An example of an element is      a. ozone gas, O3.      b. water, H2O.      c. benzene, C6H6.      d. carbon dioxide gas, CO2.        

A broad generalization based on the results of many experiments is called a. the scientific method. b.   a scientific law. c.   a theory. d.  a hypothesis.  

Which of these statements are correct for both addition and condensation polymerization?  i. Monomer units chemically bond together ii. Product contains all the atoms of the starting material iii. A second product, like water, is also formed during the polymerization process