Iron (iii) oxide is formed when iron combines with oxygen in the air. how many grams of fe2o3

are formed when 16.7 g of fe reacts completely with oxygen?

a. 12.0 g

b. 23.9 g

c. 47.8 g

d. 95.6 g

Which of the following compounds does not contain molecules? question 2 options: co2 h2 nacl h2o

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.

Which is an example of the practical pursuit of alchemy? a. forming perfect substances. b. transforming base metals. c. developing metalworking techniques. d. linking spiritual characteristics with material substances.