1970-05-30 — Page 15

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REFERENCE LIBRARY

30MAY 1870

★软僑 莫三第張四第日六廿月四年戌與廣HWAH KIU YAT PO

英中會考數學(二)答案

(旗) 堅道英文書院撰答

Suggested Ans

Carti Plants of Education Examination (English

Mathematics

郭日僑華

六期星日十三月五年〇七九一圈公年九十五國民辈中

【中學會考試題預習專機

化學科

(三十)

林錦衡

複習題二十八

複習項目定性分析與鑑別注

Section C

((x) == px3 - £2 + QI

Since the expression is divisible by x + 2

((-2) - -8p - 4 – 2g + 6 = 0.

4p + q = 1 and (3) 27P

(1)

9 + 3 +

(2)

52

10

The perimeter of AABC - preet

MP BC (mid-pt. Th.)

NPAB

MY AC

*P* MP 2 MM » ✯ (ABBO AC)

→填寫下列離子的焰色反應之結果

離子

(二)加氫氧化鈉溶液於下列離子溶液中產生何

種顏色的沉澱或何種氣体

亞鉄

(b) (i) sœ 12.

perimeter of ▲ MNP - (F) feat

(i) The ratio of the per metere of the

21 1

3x

·

(ii) Similarly the perimeter or the 5th triangle

me:

.9 metres

2 ft.

(iii) The sum of the perimetera of the rive

Sangles

102

From @caph.

(1) The least value. of..

980

(1).

The range of values

14.14 sec.

When

0:5

(b) Let the time pipe B can fill the tank be thrs?:

the time pipe à can fill the tank be(t+4) hr】

Ja l hs. pipe B alone can fall of the tank.

In 1 hr. pipa ♪ slone, can fill

the tank

can fill =+-

of the

23.(a)

+2q + 12 m

When x

Solve (2) & (2)

Since the diagonalb

950

quad, CHKL bisect

each other as wa OHKL is a rhombus

invent: Ab

To prove DB130 Proofr

In As BCG, DEC

EC - GC (given

DC. BC

/ DCB - BCG

(三)將下列陰離子分為兩組

CI SOL, CO2, NO-, HCO2, 加稀硫酸微熱之有氣体產生者 無氣体產生者

(四)選擇下列氣體名稱填於以下適當空格上

硫化氫 ® =氧化硫氣 氯化氫 一氧化碳、二氧化碳氧氮

氧化造

(1)令石灰水混濁

(2)燃燒生藍色火焰燒後注入石灰水並不混 濁但若改以無水硫酸銅檢驗容器內壁碳 酸銅呈藍色

(3)便高錳酸鉀溶液褪色,所得溶液澄清。

(4)使高錳酸鉀溶液(硫酸化)褪色所得溶液

混濁

(5)無色氣體能令濕石蕊試紙呈紅色遇氨水

·生濃白煙溶於水後加硝酸银溶液生白色 沉澱

(6)令濕石蕊試紙呈紅色,又使高錳酸鉀溶液 “褪色,其水溶液加硝酸鋇溶液生白色沉澱

但加盐酸後則沉澱溶去

3助燃通入一氧化氮中後者即呈棕色

複習題二十七解答

設10毫升醋中含CH3COOH X支

H3COOH 克雷量数 2160

= 1x 1000

2=0.388

0毫升醋總重:

醋中含醋酸:

毫升×10毫升=10元

x100%=5.88%

2) (t − 8)

1+4-12

Ans Pipe A B take 12 and neura res

to fill the tank alone.

9.(a) This can na done by using arithmetic Progression

50 + (25 - 1)4.

» 25 [100 + 96)

-2450

Total no. of seats in the first fifty rows

4900

of Besta: in the fiftiath.row

50+ (25-1) x 4

146

Total No. of seats in the concert hall

* 4900 + 146 x 15

-7090 seats

Givent AB - 40

Fovet AB

To

Pro

- congruent A3

x. (vert. opp, Ls)

DHE

180°

186

90%

DHLBG

BN(Pyth. Th.)

(Pyth. Th.)

BN2

2

DN

BD

(BN + DN}{EN-DN) DO

(未完待續)

(二)解,設碳酸塩當量為 三

碳酸塩之克當量数

HCI 之克當量数:

NaOH之克當量数:

解之得

CO之當量為支x 60 = 30

金屬之當量為:50-30=20

若金屬之原子價為之則金屬原子量

(三)解1.55克 NizzCGXH2O之克當量数,

1.55

2.55

+(106+18x) 53+2 硫酸之濃度3號 N=0

$3+ x) = 0.08

解之得x=/(甲基橙為指示劑)

(四)肿,設有KOH火克

KOH 「克當量数;X/56.

20 x = 1×1000

56

X=595

氫氧化鉀樣品之純度

100% = 82.3 7

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