Question

Lab 8: The Formula of a Hydrate. Data Table: Unknown hydrate used (called "MX._H2O") A B Molar mass of anhydrous salt "MX" 120.38 g/mole 159.62 g/mole a) Mass of beaker and watch glass 82.664 83.064 b) Mass of beaker + watch glass + hydrate 85.652 86.286 d) Mass of unknown hydrate (b-a) 2.988 3.222 c) Mass of beaker + watch glass+ anhydrous salt 84.555 84.755 e) Mass of anhydrous salt (c-a) 1.891 1.691 f) Mass of water removed (d-e) 1.097 1.531 Moles of anhydrous salt (6 sig figs) Moles of water (6 sig. figs) Formula of hydrate (show work below) _ MX · _ H2O _ MX · _ H2O Mass % water (mass water (f)) / (mass hydrate (d)) x 100

          Lab 8: The Formula of a Hydrate.
Data Table:
Unknown hydrate used (called "MX._H2O")
A
B
Molar mass of anhydrous salt "MX"
120.38 g/mole
159.62 g/mole
a) Mass of beaker and watch glass
82.664
83.064
b) Mass of beaker + watch glass + hydrate
85.652
86.286
d) Mass of unknown hydrate (b-a)
2.988
3.222
c) Mass of beaker + watch glass+ anhydrous salt
84.555
84.755
e) Mass of anhydrous salt (c-a)
1.891
1.691
f) Mass of water removed (d-e)
1.097
1.531
Moles of anhydrous salt (6 sig figs)
Moles of water (6 sig. figs)
Formula of hydrate (show work below)
_ MX · _ H2O
_ MX · _ H2O
Mass % water (mass water (f)) / (mass hydrate (d)) x 100

Lab 8: The Formula of a Hydrate.
Data Table:
Unknown hydrate used (called "MX.H2O")
A
B
Molar mass of anhydrous salt "MX"
120.38 g/mole
159.62 g/mole
a) Mass of beaker and watch glass
82.664
83.064
b) Mass of beaker + watch glass + hydrate
85.652
86.286
d) Mass of unknown hydrate (b-a)
2.988
3.222
c) Mass of beaker + watch glass+ anhydrous salt
84.555
84.755
e) Mass of anhydrous salt (c-a)
1.891
1.691
f) Mass of water removed (d-e)
1.097
1.531
Moles of anhydrous salt (6 sig figs)
Moles of water (6 sig. figs)
Formula of hydrate (show work below)
MX · H2O
MX · H2O
Mass % water (mass water (f)) / (mass hydrate (d)) x 100

Added by Mary V.

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