Lewis structure of butane

This is the C4H10 Lewis structure: Butane. For Butane, we have a total of 26 valence electrons. Whenever we see the ending, "ane", we know that we're going to have Carbons and Hydrogens single bonded. That makes it a little bit easier to draw the C4H10 Lewis structure. We'll put four Carbons in a row and then we'll put Hydrogens around them. Because each Carbon needs to have four single bonds--each bond having two valence electrons, that'll give it an octet--we'll have three Hydrogens on the end Carbons and two on the center, like this. There are the three on the ends, and then we'll put two Hydrogens on the central Carbons. Next we'll place a single bond between each of the atoms to show that a pair of electrons is being shared.

So we've used all 26 valence electrons for the C4H10 Lewis structure, and we can see that each Carbon has four single bonds. Since each single bond has two valence electrons, that means that each Carbon has an octet. Each Hydrogen has a single bond, so it has two valence electrons. That means that it has a full outer shell as well. So we've used all the valence electrons that we had for C4H10 and everything has an octet..','.

the formula mass of a molecule or a compound is the sum of the atomic weights of the atoms in its empirical formula

(that's what i know about formula mass)

air

in a tire you fill a tire with air

then a couple days later you check the air pressure in the tire

hope this mark me brainliest