[레포트]flight(항공)대 2008 일반화학1 중간족보
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CH101 GENERAL CHEMISTRY I MID TERM EXAMINATION
FALL SEMESTER 2008
Wednesday 22 October 2008: 1900 2100
Attempt all SIX questions
A copy of the periodic table is supplied
1. (i) Comment on the accuracy and precision of the following set of replicate measurements, if the accepted (real) value is 0.0919.
0.0902; 0.0884; 0.0886; 0.100 (2 points)
(ii) Calculate the length of the sides of a cubic volume occupied by a single benzene molecule (molar mass of benze...
CH101 GENERAL CHEMISTRY I MID TERM EXAMINATION
FALL SEMESTER 2008
Wednesday 22 October 2008: 1900 2100
Attempt all SIX questions
A copy of the periodic table is supplied
1. (i) Comment on the accuracy and precision of the following set of replicate measurements, if the accepted (real) value is 0.0919.
0.0902; 0.0884; 0.0886; 0.100 (2 points)
(ii) Calculate the length of the sides of a cubic volume occupied by a single benzene molecule (molar mass of benzene = 78.114 g mol-1, density of benzene = 0.8765 g cm-3). (4 points)
[1 A ( 10-8 cm]
(iii) Calculate the mass of potassium hydroxide (KOH) contained in 25.30 ml of 0.102 M (mol l-1) solution. Show working.
[molar masses (g mol-1): H = 1.008, O = 15.999, K = 39.098] (3 points)
1. (i) Mean value = 0.918 (1 point), hence accuracy high (good) (1 point), but precision low (poor) (because of scatter or wide range: 0.0884 0.100) (1 point).
(ii) Molar volume = volume occupied by 1 mol of …(투비컨티뉴드 )
[레포트]flight(항공)대 2008 일반화학1 중간족보
[레포트]항공대 2008 일반화학1 중간족보 , [레포트]항공대 2008 일반화학1 중간족보기타시험족보 , 레포트 항공대 일반화학 중간족보
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시험족보/기타
[레포트]flight(항공)대 2008 일반화학1 중간족보
레포트,항공대,일반화학,중간족보,기타,시험족보
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순서
다.
