-
-
Percent of water in sample
- mass of water lost/mass of sample
- x 100
-
Balanced equation for Na2CO3*10 H2O to drive off water of hydration
Na2CO3*10 H2O---->Na2CO3+10 H2O
-
crucible tongs
prevent mass inaccuaces caused by oil and moisture from skin
-
A hot crucible will give a mass reading that is
less than the actual weight due to currents that make the crucible more bouyant
-
Desiccator
air tight container with drying agent at the bottom, keeps low humidity, prevent sample from collection moisture as it cools
-
heat cool and weigh sample twice to
ensure all of the water of hydration has been completely driven off
-
Percent loss or gain of Cu
(|initial mass Cu - mass recovered Cu|/initial mass Cu) x 100
-
Decantation
seperation of mixtures
-
Why might the fine copper be black
the particles can react with oxygen better
-
clear vs colorless
apple juice vs water
-
C A S H n Gia
- C is clorates, A is acetates, S is sulfates, H is halogens, n is Nitrates, and Gia is Group I A metals. (And NH4+) ---> THESE ARE ALL SOLUBLE,
- XCEPT
- for S: Ca, Ba, Sr.....just remember the tv network CBS
- for H: Ca, Ba, Sr + Happy...whats happy? Hb Ag Pb ...mercury, silvr and
- lead...add a py to the end and all the first letters spell HAPPY
|
|
