Consider the combustion of butane: 2C4H10(g) + 1302(g) ===> 8CO2(g) + 10H2O(1) If you want to produce 120 moles of carbon dioxide (CO2), who many moles of butane would you need
to react?
A. none are correct
B. 195 moles
C. 150 moles
D. 30 moles
E. 480 moles

Which element in the third period would you expect to have the larger atomic radius, sodium (na) or sulfur (s)? a. sodium, because it has a higher effective nuclear charge attracting electrons in fewer energy levels. b. sodium, because it has fewer protons attracting electrons in the same energy levels. c. sulfur, because it has more protons attracting electrons in more energy levels. d. sulfur, because it has a higher effective nuclear charge attracting electrons in the same energy levels.

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.

Anthracite is so hard and pure it is also referred to as a renewable resource metamorphic rock hot bituminous coal dirty fuel