真二第張五第三日七十月二十年服丙歷要 WAH KIU YAT PO
郭日僑
五期星
日四月二年七七九一公年六十六國民華中育教濟經
股市成交價目表()
股·名
開市價高價 低價
香港 進化
125
收市價,收市價 收市價
EX
幫市 最高價 最低價
香港:遼劑 收市價,收市價
金銀
收市價
睽
龉市價 最高價 最低價 政市 夜市僵 收市價
遠
「香港會成交:7,440,000元 金銀會成交: 5,440,000元
遠東會成交:9,240,000元 九腦會成交: 90.000
太古都行! ̇洲保險 南糖
8.90 6.90
8.95
8.90
8.90
淘正國際
依時製农
2.75 2.75 2.75
8.20 6.20
6.20
.6.20
大元
1.30
1.30
1.30
1.30
裕然製辦
2.00
2.00
2.00
2.00
利安
0.91
0.91
0.91
0.91
廢聯實業
2.025
5.20 5.20.. 5.20 5.20
2.05
2.025
2.05 2.075
R
四會成交桃額:22,210,000元 ##: 433+39+0.81 金指數:375.99+2.12鉄指數:388.45-0.80金跟指數:370.94-1.
開市價 最高價 最低價 李然 送業
怡和實業
ARGAZER BELT (WER
長江衣(瞬息)
: 2174,90+2,26
莊士樂團
1.71
1.72
金銀 收市價,政市價攻市價
連卡佛A 梅城尼 鐮魚恤
23.00
23.40
1.69 1.71 1.72 23.20 23.20 23.00
兆安
1.05 .1.05
1.05
1.05
1.05
23.40
周生生:
.0.91 0.91
.0.91
0.91
0.91
「城都地邏
4.75 4.75
4.725 4.75
-4.725 4.75
1.99
1.99
2.55 2.575 2.60
11.98 1.98 1.98 2.55
1:98
實燁
(八)航業類 亞洲航藥 會德豐YA
-5.90
6.00
5.90
6.00
6.00
4.175 4.20 4.15
4.20
2.55
2.55
協成行
0.80
0.80 -0.80
0.80
0.80
WEB
0.42
0.42
0.42
0.42.
萬邦投資
)銀行及債券類
(四)地建築類
EX
0.28 0.28 0.28
恆生銀行
匯豐銀行
122:00 122.00 122.00 122.00 122.00
20.30 20.30
太古
2.10 2.15
2.10 2.15
0.28
2.15
|海外銀行
友聯銀行:
6.25
6.30 6.25
20.30 20.20 20.20. 20.20 2.50 2.50 2.50 2.50. 2.50
2.50 6.25 6.30
CORER.
.1.03 1.04 1.03
1.04
1.03
1.03
|南太平地產!
藟邦觥業 RECEBER 東方貨櫃 華光航乘
5.05.
5.05
5.05 5.05
5.50 5,50 545
·5.45
3.90
3.925 3.875
3.925 3.90
3.80 9.80
3.80
3.80 380
長江實業、
5.90
6,90
5.85
5.90
5.85
5.85
恆生工業
·0.30
0,30
0.295
0.295
0.30
$97
店世業
偉帶.
0.72 0.78
0.72
0.72 0.78
**
和興發展-
0.94
0.95
0.04
0.95
0.95
六面中政府債券
20
聯合企業
-6.80
6.60
6.60
6.60
FORMS (
110.2% 110.2% 109.5% 110.2% 109.5% 110.0%
:輒百機
0.38
0.38
0.28
0.38 大
0.65
0.65
-0.66.
0.65
太平記(除
)
(二)公用類
嘉年地
4.45
4.50
4.45
4.45
4.50
0.69
0.69
0.67
0.69
0.68
【怡和頭券
7.20
7.25
7.20
7.25
7.20
豫地公司
7.55
7.55 7.45 7.50
7.45 7.50
RS(RA)1.16
1.17
1.15
1.17
1.15
森那美
九阳
19.50 19.80 19.40
FAKER ON BE
5.40 5.45 5.40
中華煤氣
23.60
豐縣公司
31.75.
23.50 23.60 32.25 31.75
「
15.60. 15.70 15.60
19.70·19.70. 19.80
5.40 .5.40 23.50 23.50 32.25 32.25 15.70
信托公司A
5.45
·合和實業
2.625
新昌集團
2.675
2.625 2.60 2.70 -2.675
2.625 2.625 2.675 2.675
2.625
「統一機構 「金山地(豫)
永泰發展
1.50 1.50
1.50
1.50
·新鴻基證券
1.82
1.82
1-81
1.82
1.82
三(十)橡膠理
3.025 3.025.
3.025
3.025 3.025
32.25
·和範地產:
MAMMA
1.56
1.58
1.56
四海激
1.26 1.26 1.26 1.26
(五)倉塢類
RIYANG
【安通
九龍巴士
巴
(三)工商企業類
1.88 1.89
4.404.40 - 4.35
30.00 30.50 29.80
4.375 4:40 30.00
4.40
保整
3.35 3.35 3.35
3.35
3.35
黃毅揮
9.80
9.80
9.70
9.70
9.70
2(十一)其他
30.50 30.50
聯邦A
1.86
1.86 1.85
1.85
1.86:
九龍倉
16.00
BAR
「安全貨食:
1.88
1.89
1.89
新得基地蛋 大豐
4.90
4.925 4.90
4.90
4.90
4.90
0.35 0.35
0.35
0.35
|中華造船廠
∙16.10 15.90 16.00 1.30 1,30 .1.30 9.65 9.75 9.65 $1.21
1.21 1.21:
15.90
15.90
薛立斯(除息.20.20
0.20
0.195
0.1975
1.30
1.30
ABEE
3.65
3.70
3.70
3.70
0.1975 3.75
9.65 9.75 9.70 1.21
星島報業
5.65
5.65
5.65
南華早報
「無進公司
9.60 9.60
9.60
9.60
:紙盤發展
1.02
1:03
∙1.02
1.03
1.03
BASENAME
22.90
22.90
22.60
22.80
22.60
22.80
BEL
0.78
0.78
0.77
0.77
0.77
(六)酒店類 酒店
̇永安人壽
1.48
1.48
1.46
1.46
2.15
2.175
2.15 2.175 2.175
2.15
紅石
0.52
0.54
0.52
3.80
3.60
3.675 3.60
3.525
3.60
新世界。
1.52.
1.53 1.51 1.52
1.52
1.52
2:175 2.30
2.175 2.25
2.30
城市酒店
41.00 41.00
41.00
41.00
XEER
1,27. 1.28 1.26
1.28
2.30
專明建業
**
3.15
3.20
|海陽公司
14.20
14.20
14.20
鷹君
2.50
2.50
2.475 2.50
2.475
2.475
和記 預料 具
3.25
3.276 3.25
3.25
大酒店
13.60 13.60
13.50
14.20 14.20 13.60
14.20
BRER
13.60
65.00
65.00 65.00
65.00 65.00
3.25
3.25,
18.20
18.30
18-20
18.20 18.20
18.30
大昌雄
1.19 1.19 1.18 1.19
.1.18
1.18.
0.44
0.44 0.440
0.44
2.075 2.075
2.05
2.05
.5.50
5-50
5.50
5.50 5:50
餐生一
0.315 0.315
0.305
0.305
***
12.90
12.90
12.90
12.90
九龍交易所上市股
0.31
生力啤酒:
BURR (AL70.80
0.80
0.79
0.80 0.79
kat
7.45
7.45 7.45
7.45 7.45
瑞興公司 商
0.78 0.79
0.78
0.79
百樂:
跤 保堂:
̇關市價: 最高價
最低價
收市價
先生公司
1.63 1.63
1.62
1.62
1.52 1.63
! 東光實業
4.10 4.10
4.05 4.10.
04.075
4.075
明輝發
0.636.63
0.61
0.61
屈臣氏
捷喞
1.46
1.46
1.45
∙1.45
(七)紡編製衣類
6.30. 南豐耖廠: 新馬雲衣(除息)10.40
國際實業
6.40.
10.40
6.30 10.40
6.30
6.35 10.40
6.40
新安:
ABB 2.60 1.10 價槪企業C除息20-77 .0.77
2.625
2.60
1.10
1.09 1.10 0.77
2.60 2.60 2.625
1.09
永遠和
0.48
0.48
0.48
*****
0.90
0.90 0.90
0.90 0.90
糖光地
0.89
0.89
0.88
0.89
0.88 0.88
那粉
0.57
0.57
0.57
10.77
BALE
會德豐被廠
永鴻雞
1977中學會考試預習專攥
明德社主編
HELL
(十三),番榮家 Physics (13)
Answers to exercin#' 6
2(b) Let the refractive in- dex of plastic (with res- pect to air) be n.
plastic
glass
As figure shown, the light ray is refracted twice.
the ray is refracted from glass to plastic, I] is the image for the first refract- kon,
ben irat refraction
Apply the formula
*Real" depth"
Apparent depth
Hence,
real depth thickness of
the glass block dentu b
apparent
30
20.
refractive index of
the glass block with respect to the plas- tic block
1.5
(1)
For the 2nd refraction the ray is refracted, plastic to air, hence
apparent depth"
thickness of plant
hlock 10(cm)
= 3510
real depth
=
45en
thickness of the plastic block h
35 h
35
45.35
(2) substitute into
45n-35
20
20n= 45n-35%%
25n-35
1.4 (Ans.)
(2)
(c)(i) For i = 1,3m - 1300ram
since Ĉ 50mai
pply the lens formula
1
+
1
+
-
・平
V 5.0
▼ 52(mm)
for further objects for objects at infinity v
5cm
Movement required
(52 = 50)mm
2am
-
-3.
2 x 10 (Ans.)
(f) The image is real, in-
verted but diminished. (iii) Size of image =
4 Or Size of object =-1.5m= 1500vim
magnification
size of image size of object
40 1500
apply the lens formula
15
u = 1925mm -1.925m Therefore, the boy should be 1.925 m from the came
Exercise 7..
1. (e) An ungraduated mercury-in-glass thermometer and an air thermometer, of the type shown in the figure were each first placed in pure melting ite
then in air at room
temperature, and
finally in an oil ha th。.
The following readings wer recorded g
Length of ectcy.
0-0730
-12 m
Length of six
cubaan di in mir
((not connemad)
-16=
mercury
bead
(i) Reduce from the air ther- mometer readings” the
mper-
ature of
oil bath, (ii) Makeng use of the answer to (1), find the room temp- erature from the mercury-in- glass thermometer readings. fiii) If the mercury-in-glass thermometer has a thread of cross-sectional area 21p1g.
and contains 10 mercury at 0°C, what in the apparent expansivity of mer cury in glass? (b)(i).
As figure shown, angle Dis the devi*ion of the prism when the angle of incidence. isa and the angle of emer- gence is b. A is the refract- ing angle of the prism. Show that D = (a + b} A
(ii) If the refractive index of the prism is n, and it is given that minimum deviation occurs when the ray passes symmetrically through the prism; hence, show that
sin(A + d)/2/
sinA/2
П
where dis the minimum de- viation.:
2,(8) Aa Tigure shown,
Pin..
concave mirror lies hori- zontally so that its optical axis is vertical. A searching pin placed on this axis and- its position is adjusted to coinside with its own image "formed by reflection in the
mirror. If a thin layer of a liquid is poured into the mirror and the pin has to be removed h em before it agnin coinsides with its image, find the refractive index of the liquid in terms of h and f,
where is the focal length
Conf the mirror measured in en
(b) a needle 0.1 m tong is placed along the pricipal axis of a concave mirror of focal length 0.15m with its nearer end end 0,2m from the mirror, Find the magnification of the image of the needle. (c) How far must an object he placed from a lens of fdea! length 0.16m in order that the area of the image formed by the lens may be 16 times the area of the object ?
化學(十三) 朱宏林
Chemistry (13)
Question 22.
A. The following results were
obtained by conducting two sep- arate experiments on a sólid mixture known to consist of anhydrous potassium carbonat potassium hydrogen carbonate and potassium chloride only. Experiment A-3.0 g of the mixture was heated until there was no further change, 120 cm" of carbon dioxide was collected at room temperature and one atmospheric pressure.
.......
Experiment B 3.0 g of the mixture was treated with excess of dilute hydrochloric acid, 360 cm of carbon dioxide was collected at room temperature and one atmospheric pressure. (Molar volume of gas at room
temperature and one atmospheric pressure is 24000 cm.)
a) Write the equation for the
change when the mixture is heated.
b) How many moles of carbon
dioxide were evolved in the experiment A? Hence, or oth- erwise, find the mass of the potassium hydrogen carbonate. in the mixture?
c) Give the equation for the
reaction between the mixture and hydrochloric acid. d) How many moles of carbon
dioxide were evolved in the experiment B? Hence, or oth- erwise, determine the mass of potassium carbonate in the mixture?
What is the composition of the original mixture by mass? 8. Describe and explain what
happens when each of the following mixtures.is heated. a) Concentrated sulphuric
acid and sódium nitate " crystals.
b) Ethanol and an oxidising agent, such as acidified potassium dichromate solution.
c) Ammonium chloride and
calcium hydroxide solids. a) Ammonium chloride and
sodium chloride
Give the equations for the change in (a) and (c) only. Question 21
A. P is a colourless crystalline
solid having the formula MYO, where denotes oxygen atom and M' and Y are two other elements.
On heating P strongly, a colour- less gas Q is given off which can re-light a glowing splint and the cold residue is a white solid R. When aqueous silver nitrate is added to an acidified aqueous solution of R, a white -precipitate $ is observed which can dissolve in excess aqueous. ammonia. When chlorine gas is passed into an aqueous solution of R, no obvious change is ob served. Furthermore, both P andİ R give a lilac colour to a bun- sen flame.
Identify and name the subst
ances P, Q, R and S.
Give the equation for the
change when P is heated.
c) Give an ionic equation for
the formation of the preci pitate S.
d) Why can the precipitate S
dissolved in excess ammonia solution?
When 0.245 g of P is heated strongly, 72 cm of gas Q are collected at room temperature and one atmospheric pressure. Find the formula mass of P from these data. (holar vol- une of gas at room temperat- ure and one atmospheric pressure is 24000 om".).
f) Are your veiws on the nature
of M and X consistent with the formula mass calculated in (e),
B.
The equation for the com- bustion of ethanol is
CHOH + 30, 2002 + 3H20 for this reaction AH= -1360- kJ per equation..
a) What is the change in heat
energy when 92 g of ethanol, is completely burned in air? b) Is the heat evolved or
apsorbed? Question 24
A. In the experiment illustrated.
below, a mixture of sodium hitrite and ammonium chloride solutions is heated. A colour- less gas W is liberated and is then passed over heated magne- sium ribbon in a combustion tube.
magnesium NaNO, & NH CÍ
heat
gas W
heat
ld water
-liquid X
a) What is the gas W? b) Give the equation for the
formation of the gas W. What is the liquid X? State a simple chemical test for the liquid X.
e) Why is the U-tube immersed
in the cold water?
f) What substance is formed in
the combustion tube at the end of the experiment? What is its colour?
g) Write the equation for the
reaction taking place in the combustion tube.
h) It is found that the mixture
can be replaced by a single substance. What is the single substance? Why is it not used in actual practice? . i) If some of the substance
obtained in the combustion tube is added into some of the liquid X, a colourless
gas with a pungent smell is evolved. What is the gas?
What other substance is also obtained?
j) Give the equation for the
reaction in (1).
B. The oxide of an element M
contains 31.6% by mass of oxygen. The relative atomic masses of H and oxygen are. 52 and 16 respectively.
a) Find the relative number of
g-atoms of land of oxygen which are combined together Hence, deduce the empirical formula for the oxide of M.
Corrections for Chemistry (12)
1. Answer to the 2.21(B) should
be the answer to 0.20(B)..
2. Answer to Q.21(B) should be
as follows:
a) When phosphorus (V), chloride is added to ethanol, a vigorons reation occurs and steamy, white fumes of hydrogen chloride are given out. The other Products are chloroe- thane (or ethyl chloride) and Phosphorus oxychlo- ride.
C2H5OH + PCL
C2H ̧C1 + FOC1 ̧ + HCI
25
b) When ethanol and Pro-
Panoic acid are heated in the presence of a mineral acid, an ester is formed. It has a sweet smell and is call- ed ethyl propangate... The reaction is reversible.
CH COOH + HOCH CH CH2
CH3CH2COOC2H5 + H2O
c) The ethanol becomes dark-
brown due to charring of ethanol. Then, a colour- less gas, ethene, is gi given off by the dehy- dration of ethanol by con- centrated sulphuric acid (in excess) at 180°C.
conch So
2
C2H5OH CH2=CH2 + H20
d) The solution of bromine.
in tetrachloromethane is red. When propene is passed into it, the bromine solution is rapidly decolorized because the product is an oily, colourléss, addition compound called 1,2-dibromopropane (or .
Propylene bromide).
CH,CH-CH, + Br,
CH3. CH3-C-CH2
Br Br
cci
No comments yet.
Private notes are available after approval.