2007-11-22 09:40:51 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
A 1 molar (=1M) solution is 1 molecular weight in grams of the molecule in 1 liter of water. To get that for NaCl, add the elemental weight of Na to the elemental weight of Cl. That many grams of NaCl in 1L of water is a 1M solution. Now figure how many grams you need per liter to make a 2M solution, and then take into account that it's 2 liters.
2007-11-22 09:46:59 · answer #1 · answered by John R 7 · 0⤊ 0⤋
NaCl=58 grams/mole
needed 4 moles=232 grams
2007-11-22 17:46:37 · answer #2 · answered by science teacher 7 · 0⤊ 0⤋
* Science is nearly correct except that the MW of Cl is closer to 35.5, making the MW of NaCl 58.5. Four moles is then 234 gm.
2007-11-22 18:16:38 · answer #3 · answered by Bacse 6 · 0⤊ 0⤋
I m agree with "backe" it is true gram.
2007-11-22 18:28:20 · answer #4 · answered by chemist fatma 1 · 0⤊ 0⤋