slevey,+mL+to+kg.

stoichiometry: converting from mL to kg.
//basic overview//: this is the total opposite of what we just did last time. here, we will learn how to convert a number of milliliters [mL] into a number of moles of gas, then to a number of grams of gas, and then even further into a number of milliliters [mL] of gas.

basically, we have to go through a journey of: go from mL -> L -> moles -> grams -> kg. woot.

say you have 100 mL of H. first, we have to turn it into L.
 * here is a sample problem:**

//first, converting mL to L:// first, set up a conversion factor.

100 mL of H x __1 mL__ = .1 L of H. ................... 1000 L

righteous, now we are in liters of H.

from here, our next step is liters to moles.

//second, converting L to moles:// set up another conversion factor, starting with .1 g of H [your given]. .1 L of H x __1 mole of H__ = .004 moles of H. ................22.4 L of H here, our two units of L cancel out, leaving us in moles.

//third, converting moles to g:// guess what we have to set up? you got it, a conversion factor. start with moles of H.

.004 moles of H x __1 mole of H__ = .0039 g of H. ...........................1.01 g of H awesome, so now we're in g of H, but hey, didn't we want to be in kg of H? no problem!

//four, converting g to kg:// set up ANOTHER conversion factor :]. start with your grams of H.

.0039 g of H x __1,000 kg__ = 3.9 kg of H. .........................1 g

we're done!

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