In 3Na2CO3,Before Na2CO3 a number "3" remains.Here What does "3" represents?Also look,after Na, a number" 2 "remains.Here what does "2" represents?
2006-08-11 03:33:54 · 6 answers · asked by star123 2 in Science & Mathematics ➔ Chemistry
The three infront of 3Na2CO3 means that there are 3 molecules of Na2CO3. The 2 after Na is the charges on Co3.
ok the charge for Na is +1 or +
The charge on CO3 is -2
so when you put these 2 ions together you would substitute.
Let me explain the charges. Na is +1 because is it lost one electron. CO3 is -2 because it gained 2 electron
2006-08-11 09:36:56 · answer #1 · answered by antonette_lawrence 2 · 0⤊ 0⤋
3 is the number of molecules which are in a reaction... i am sure you found "3Na2Co3" in a reaction (it's all about the conservation of the number of the molecules)... the number 2 means that are 2 atoms of Na combined with one atom of C and 3 of O
2006-08-11 15:05:46 · answer #2 · answered by white_fox362 2 · 0⤊ 0⤋
The "3" means 3 moles of Na2CO3 (1 mole of a molecule equals 6.02x10^23 molecules), the "2" means 2 atoms of Na are bonded to one atom of C and 3 atoms of O in the molecule.
2006-08-11 10:53:01 · answer #3 · answered by Anonymous · 0⤊ 0⤋
3 signifies 3 units byvolume of Na2CO3.it can be 3 litre,3 ml,3 mol
the 2 after Na signifies the valency of CO3radical meaning because the valency of CO3 is 2 and the valency of Na is 1 ,2 atoms of sodium will combine with i molecule of CO3 to form Na2CO3
2006-08-11 12:09:15 · answer #4 · answered by raj 7 · 1⤊ 0⤋
the 3 can mean 3 moles or 3 molecules. if it's a gas it can also mean 3 liters at stp... the 2 means the number of atoms of that element in the compound.
2006-08-11 15:06:37 · answer #5 · answered by The Cheminator 5 · 0⤊ 0⤋
))3 stands for 3moles(mole is used to represent how manny grams of sodium carbonate)2 represents the valancy that is the no.of bonding atomswhich should be there to have the compound.
2006-08-11 11:17:17 · answer #6 · answered by karthika 1 · 0⤊ 0⤋