+10 I have a homework on Petrology and the Question is to determine how much Potassium is in a 791.67 kg.
Don't you have to specify 791.67 kg of what substance? It must be a compound that contains Potassium. Unless they want to determine the number of moles of Potassium in 791.67 kg.
The molrcular mass of Potassium is 39.0983 gm/mol. Then just convert 791.67 kg into grams and divide as follows:
791.67 X 1000=791,670 grams / 39.0983=20,248.19 moles of Potassium.
Don't you have to specify 791.67 kg of what substance? It must be a compound that contains Potassium. Unless they want to determine the number of moles of Potassium in 791.67 kg.
The molrcular mass of Potassium is 39.0983 gm/mol. Then just convert 791.67 kg into grams and divide as follows:
791.67 X 1000=791,670 grams / 39.0983=20,248.19 moles of Potassium.
Do you know what a "mole" in Chemistry is? If you don't, then you haven't reached that level of Chemistry yet.
The number at the bottom of the cell in the table of periodic elements is the the number of grams of that substance that is a 'mole' of that substance , a mole has 6.023 x 10^23 atoms of that substance.
+1315 A mole is the gram molecular weight. You can find it on the periodic table of the elements. The kind of chemistry is the easy part to understand.
+8581 Oh...Well.. I have NOT taken Chemestry yet, And im a junior, uh- oh! I don't think it's a requirment, though.
+1315 I not take it yet either. There are web sites that teach it. So I get a big head start when I do. :)
