My vague idea of it is that I need to get the weight of carbon, hydrogen and oxygen in the sucrose... So that I know exactly how many grams of each
there is...
And get the weight of the potassium, nitrogen, and oxygen for KNO3. But, to solve this I also need the reaction equation? Just beginning to study
O-Chem a bit in my free time. Bot0nist - 20-6-2011 at 11:59
A good place to start.LanthanumK - 20-6-2011 at 13:37
Add the individual atomic masses (found as atomic masses on the periodic table) for a molecule to find its molecular mass, which is the same number as
molar mass. So for KNO3 add the atomic mass for 1 K, 1 N, and 3 O to get the number for KNO3.
Atomic mass is atomic mass units/atom; molar mass is grams/mole. They have the same number although they have different meanings.watson.fawkes - 21-6-2011 at 10:07
Atomic mass is atomic mass units/atom; molar mass is grams/mole. They have the same number although they have different meanings.
To remember approximately what an atomic mass unit is, it's approximately the mass of a proton (within a
percent). So one mole of protons weighs approximately one gram. Just counting the protons and neutrons in a molecule gives a good estimate of its
actual mass. This disregards nuclear binding energy, but is good for a mnemonic as well as quick estimates.leu - 21-6-2011 at 11:00
