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1) Setiap orang kena pilih satu soalan untuk dibuat/dicari

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1) Setiap orang kena pilih satu soalan untuk dibuat/dicari

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2) Cari atau buat soalan (pengiraan) berdasarkan topik yang diberi
3) Soalan yang bagus akan dapat bintang (senang ***, sederhana ****, susah *****)
4) Pelajar pertama yang menjawab betul akan mendapat bintang
5) Pelajar pertama yang mengesahkan jawapan yang betul akan dapat * bintang
6) Pelajar yang mengumpul bintang terbanyak akan mendapat hadiah.

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zaida

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Anis Nabilah

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ieqahalim🍭❤️

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Zuhree

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500.0 L of gas are prepared at 0.921 atm pressure and 200.0°C.  The gas is placed into a tank under high pressure.  When the tank cools to 20.0°C, the pressure is 30.0 atm.  What is the volume of the gas under these conditions?

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JATIRINAH

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568 cm3 of chlorine at 25° C will occupy what volume at -25° C while the pressure remains constant? 

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568 cm3 of chlorine at 25° C will occupy what volume at -25° C while the pressure remains constant? 

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A gas in a container has an initial volume of 2L and an initial temperature 45℃. Then final volume decreases to 0.25L. What is the final temperature?

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Dr ni jawapan Saya, tak same dengan jawapan lia Tak tahu lah salah kat mne.boleh dr semakkan😅

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Terdapat 100cm3 gas dalam bekas yang menghasilkan tekanan 400Pa. Jika tekanan berubah menjadi 200Pa dan suhu adalah malar, berapakah isipadu gas?

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Terdapat 100cm3 gas dalam bekas yang menghasilkan tekanan 400Pa. Jika tekanan berubah menjadi 200Pa dan suhu adalah malar, berapakah isipadu gas?

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A gas is collected over water at 50.0*C and a barometric pressure of 105.00kPa. Determine the pressure of the gas if the water vapor pressure is 12.34kPa. Find Pgas?

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A gas is collected over water at 50.0*C and a barometric pressure of 105.00kPa. Determine the pressure of the gas if the water vapor pressure is 12.34kPa. Find Pgas?

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P1= 400       P2= 200
V1= 100       V2= ?

P1 V1 = P2 V2
400x100 = 200 x V2
V2 = 400x100/200
V2 = 200 cm3

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V1= 568 cm3        V2= ?
T1 = 25°c
= 25°c + 273
=  298 k

T2 = -25°c
= -25°c + 273
= 248 k

V1/T1 = V2/T2
V2 = V1 x T2/T1
V2 = 568 cm3 x 248 k / 298 k
V2 = 472.69
V2 = 473 cm3 CI2

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V1 = 500.0L            V2 = ?
T1 = 20°C                T2 = 200°C
P1 = 0.921 atm       P2 = 30 atm

V2/ V1 = T2/T1 • P1/P2

Therefore

V2 = V1 • (T2/T1 • P1/P2)
= 500.0 L x (200.0 + 273.15) K          0.921 atm
------------------------------    •    -----------------
(20.0 + 273.15) K             30.0 atm

= 500.0 L x  (473.15 / 293.15  •   0.0307)
= 500.0L x 0.0496
= 24.78
V2 = 24.8 L
____________________________________________________________

Use other formula

P1 V1 / T1  = P2 V2 / T2

(0.921)(500)        =    (30.0)(V2)
--------------------------         -------------------
(200.0+273.15)          (20.0+273.15)

0.973 =   (30.0)(V2)
-------------------
293.15

(V2)(30.0) =  0.973 x 293.15
(V2)(30.0) =  285.23
V2 = 285.23/30.0
V2 = 9.51 L

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A sample of gas has a volume of 2.15 L at a temperature of 52.30 degrees Celsius. The gas sample is heated to a temperature of 120.00 degrees Celsius. Assume pressure and amount of gas are held constant. Predict whether the new volume is greater or less than the original volume, and calculate the new volume.

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Jawapan pengiraan(Anis)

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Belon mengandungi 0.2 mol oksigen dan 0.5 mol nitrogen. jika belon adalah pada suhu dan tekanan piawai, apakah tekanan separa bagi nitrogen?

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Belon mengandungi 0.2 mol oksigen dan 0.5 mol nitrogen. jika belon adalah pada suhu dan tekanan piawai, apakah tekanan separa bagi nitrogen?

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Determine the amount of heat required to increase the temperature of a 3.82-gram sample of solid para-dichlorobenzene from 24°C to its liquid state at 75°C. Para-dichlorobenzene has a melting point of 54°C, a heat of fusion of 124 J/g and specific heat capacities of 1.01 J/g/°C (solid state) and 1.19 J/g/°C (liquid state).

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Calculate the quantity of heat required to raise the temperature of aluminium metal block with hear capacity of 460 Jk^-1 fron 15° to 45°.

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Pengiraan yang Saya dapat(Anis)

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A sample of chlorine gas fills a vessel at a temperature of 37oC. The vessel has a volume of 3L and experiences a pressure of 3atm. What is the mass of the chlorine gas in the vessel?

R = 0.08206  L*atm/ mol*K

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If the pressure of a sample of one mole of an ideal gas is increased from 2atm to 3atm at a constant volume, and the initial temperature was 20˚C, what is the final temperature of the sample?

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Question 2

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Find the temperature in Celsius needed to change the pressure of 10.0 liters of a gas that has a pressure of 97.0 kPa at 25 C to standard pressure. Standard pressure is 101.325 kPa.

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Two bulbs of different volumes are separated by a valve. The valve between the 2.00 L bulb, in which the gas pressure is 1.00 atm, and the 3.00 L bulb, in which the gas pressure is 1.50 atm, is opened. What is the final pressure in the two bulbs, the temperature being constant and the same in both bulbs?

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Q1

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Q2

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Cari hasil tekanan selepas Valve of Bulbs dibuka:

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Cari hasil tekanan selepas Valve of Bulbs dibuka:

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P1V1=P2V2

(1.00 atm) (2.00 L) = (x) (5.00 L)
x = 0.400 atm

(1.50 atm) (3.00 L) = (y) (5.00 L)

y = 0.900 atm

Tambahkan kedua-dua tekanan:
0.400 atm + 0.900 atm = 1.30 atm