Which conversion factor do you use first to calculate the number of grams of FeCl3 produced by the reaction of 30.3 g of Fe with C12? (What would be your first step in the bracket/train tracks?)
2Fe + 3Cl2 --> 2FeCl3

1) 1 mol Fe/ 55.845 g Fe
2) 3 mol Cl2/ 2 mol Fe
3) 35.453 g Cl2/ 1 g Fe
4) 162.2 g FeCl3/ 2 mol FeCl3

Why does the sun appear to be the brightest star in the sky? a- its apparent brightness is much greater than other stars. b- it burns more gas, making it brighter than any other star. c- it is the largest star in the galaxy, so it is the brightest star. d- its relative distance to earth is closer than the other stars.

Match the mixture with the substance// i really need on this guys (it’s a pic btw)

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.