GOT CA TEST ON TUESDAY
In mugging mode.
1) A mixture of CaO amd CaCO3 is analyzed. The thermogram shows one reaction between 500degree Celcius and 900degree Celcius, where the mass of the sample decreases from 125.3g to 95.4g. What is the percentage of CaCO3 in the sample?
2) Compound A has a molecular weight of 98.4g/mol and a heaf of fusion of 1.63kcal/mol. Compound B has a MW of 64.3g/mol and melts at approximately the same temperature as Compound A. Samples of 500mg of each yield DTA peak areas of 60 and 45cm squared respectively. What is the heat of fusion of Compound B?
Instrumental Analysis II. Siao.
You tell me, how to solve bombastic questions like those above-mentioned? You tell me, you tell me?!?!
In mugging mode.
1) A mixture of CaO amd CaCO3 is analyzed. The thermogram shows one reaction between 500degree Celcius and 900degree Celcius, where the mass of the sample decreases from 125.3g to 95.4g. What is the percentage of CaCO3 in the sample?
2) Compound A has a molecular weight of 98.4g/mol and a heaf of fusion of 1.63kcal/mol. Compound B has a MW of 64.3g/mol and melts at approximately the same temperature as Compound A. Samples of 500mg of each yield DTA peak areas of 60 and 45cm squared respectively. What is the heat of fusion of Compound B?
Instrumental Analysis II. Siao.
You tell me, how to solve bombastic questions like those above-mentioned? You tell me, you tell me?!?!
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1 comment:
hey sharon,
Kit Fan here. Ur blog rocks. really.
regards,
kit.
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