ok, the lab is like this: we have this "X" chemical, and we have to fill it to a crucible till is 1/3, and then heat it up for 8 mins. after that, we let it cool down for 5 mins, then open the cover and cool it for another 5 mins.
here are my data:
weight of the crucilbe, cover, and chemical X - 45.33g.
weight of the crucible and cover - 36.35g.
weight of the chemical X - 8.98.
weight of the crucible, cover, and chemical X (after heating) - 41.17g.
weight of water lost - 4.17g.
i calculated the percent water - 46.4%
and i have to determine the correct formula for hydrated chemical X from my data. in other words find Z in chemical X * Z H2O.
The hint is the Molecular Weight of chemical X is 120.4g
we also have to find what is chemical X !!!
i know this is very long but if u can help me i will reward u with 10 pts!!!
2007-02-18 11:06:35 · 2 answers · asked by Anonymous in Education & Reference ➔ Homework Help
MgSO4 is the chemical
2007-02-18 11:13:54 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Look on the pedriocit (not sure if thats spelled right) table for a chemical or liquid wose atomic weight is 120.4 grams, as for the rest, i donot know. I'll try ti find X for you.
2007-02-18 19:14:23 · answer #2 · answered by trinisam 5 · 0⤊ 0⤋