The combustion of propane is illustrated below. C3H3(g) + 502(9) --> 3CO2(g) + 4H2O(1) AH = -2550 kJ/mol.
1. If 18.0 grams of propane (44.11 g/mol) burns, how much energy will be produced?
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There are 6.022, 104 atoms of hg in 1 mole of hg the number of atoms in 45 moles of hg can be found by multiplying 4.5 by 6.022, 102 which is the number of atoms in 4.5 moles of hg, correctly written in scientific notation with the correct number of significant figures? 0 21,109 0 21,100 271, 1024 27.099, 100 mark this and retum save and exit submit

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.

What are the similarities between compounds and mixtures?