A student was asked to identify an unknown hydrate by

Assignment Help Chemistry

Reference no: EM13386166

A student was asked to identify an unknown hydrate by following the procedure described in this module. After heating and cooling, a 2.752-g sample of this unknown weighed 1.941 g. Students were given a list of possible compounds from which to identify their unknowns: LiNO3 . 3 H20, Ca(NO3)2 . 4 H2O, and Sr(NO3)2 . 4 H2O.
a) Calculate percent water in the students unknown.
b) Could the unknown possibly have been Sr(NO3)2 . 4 H2O? Briefly explain.
c) What is the probable identity of the students unknown?
d) Based on the students results and your answer to (c), what is the most probable source of error in the experiment?

A student was asked to identify an unknow hydrate by following the procedure described in this module. After heating and cooling, a 2.752-g sample of this unknow weighed 1.941 g. Students were given a list of possible compounds from which to identify their unknowns: LiNO3 . 3 H20, Ca(NO3)2 . 4 H2O, and Sr(NO3)2 . 4 H2O.

a) Calculate percent water in the students unknown.
b) Could the unknown possibly have been Sr(NO3)2 . 4 H2O? Briefly
explain.
c) What is the probable idenity of the students unknown?
d) Based on the students results and your answer to (c), what is the
most probable source of error in the experiment?

Reference no: EM13386166

Questions Cloud

What mass of ethylene glycol hoch2ch2oh must be dissolved : what mass of ethylene glycol hoch2ch2oh must be dissolved in 4.510 kg of water to result in a freezing point of

What is the balanced equation of the ostwald process and is : what is the balanced equation of the ostwald process and is it exothermic or

A balloon is inflated with 02492 grams of helium to a : a balloon is inflated with 0.2492 grams of helium to a pressure of 1.26 atm. if the desired volume of the balloon is

What is different about about the bond that forms between : what is different about about the bond that forms between carbon and oxygen and the bond that forms between oxygen and

A student was asked to identify an unknown hydrate by : a student was asked to identify an unknown hydrate by following the procedure described in this module. after heating

A breathing mixture used by deep-sea divers contains : a breathing mixture used by deep-sea divers contains helium oxygen and carbon dioxide. what is the partial pressure of

The normal boiling point of acetone is 5600degc and its kb : a water solution containing 2.00 g of an unknown molecular substance dissolved in 10.00 g of water has a freezing point

A specific brand gourmet chocolate candy contains 700g of : a specific brand gourmet chocolate candy contains 7.00g of dietary fat in each 22.7 piece. how many kilograms of

What volumes of h2g and o2g at stp are produced from the : what volumes of h2g and o2g at stp are produced from the electrolysis of water by a current of 3.00 a in 10.0

User Account

All Pages