2007-05-02 05:00:32 · 2 answers · asked by Raigaanah A 1 in Science & Mathematics ➔ Chemistry
Weigh out some solid, heat it strongly and weigh it again.
The final mass is pure Na2CO3 (to find its moles divide by 106) and the mass lost while heating is the water which comes off (to get its moles divide the mass lost by 18).
Now divide the moles of H2O by the moles of Na2CO3 and you have "x". It's usually 1 or 10.
2007-05-02 06:27:39 · answer #1 · answered by Gervald F 7 · 0⤊ 0⤋
x= 10
Sodium carbonate, a white crystalline substance,
Na2CO3.10H2O, having a cooling alkaline taste, found in
the ashes of many plants, and produced artifically in
large quantities from common salt. It is used in making
soap, glass, paper, etc., and as alkaline agent in many
chemical industries. Called also sal soda, washing
soda, or soda. Cf. Sodium bicarbonate, above and
Trona.
2007-05-02 12:07:58 · answer #2 · answered by merz_drm 2 · 0⤊ 1⤋