मराठी

Correct the Following Statement: 0°C is Equal to Zero Kelvin. - Chemistry

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प्रश्न

Correct the following statement:

0°C is equal to zero Kelvin.

एका वाक्यात उत्तर
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उत्तर

-273°C is equal to zero Kelvin.

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Gases and Its Characteristics
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 7: Study of Gas Laws - Exercise 7 (A) [पृष्ठ १२६]

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सेलिना Concise Chemistry [English] Class 9 ICSE
पाठ 7 Study of Gas Laws
Exercise 7 (A) | Q 24.3 | पृष्ठ १२६

संबंधित प्रश्‍न

Molar volume is the volume occupied by 1 mol of any (ideal) gas at standard temperature and pressure (STP: 1 atmospheric pressure, 0 °C). Show that it is 22.4 litres


The figure shows the plot of PV/versus Pfor 1.00×10–3 kg of oxygen gas at two different temperatures.

(a) What does the dotted plot signify?

(b) Which is true: TT2 or T1 < T2?

(c) What is the value of PV/where the curves meet on the y-axis?

(d) If we obtained similar plots for 1.00 ×10–3 kg of hydrogen, would we get the same value of PV/at the point where the curves meet on the y-axis? If not, what mass of hydrogen yields the same value of PV/(for low pressure high temperature region of the plot)? (Molecular mass of H= 2.02 u, of O2 = 32.0 u, = 8.31 J mo1–1 K–1.)


An oxygen cylinder of volume 30 litres has an initial gauge pressure of 15 atm and a temperature of 27 °C. After some oxygen is withdrawn from the cylinder, the gauge pressure drops to 11 atm and its temperature drops to 17 °C. Estimate the mass of oxygen taken out of the cylinder (= 8.31 J mol–1 K–1, molecular mass of O2 = 32 u)


What is diffusion? Give an example to illustrate it.


Choose the correct answer:

The graph of PV vs P for gas is


Give reason for the following:

Volumes of gases are converted into s.t.p. conditions and then compared.


Show that for monoatomic gas the ratio of the two specific heats is 5:3. 


Estimate the average thermal energy of a helium atom at the temperature on the surface of the Sun (6000 K).


A box of 1.00 m3 is filled with nitrogen at 1.50 atm at 300K. The box has a hole of an area 0.010 mm2. How much time is required for the pressure to reduce by 0.10 atm, if the pressure outside is 1 atm.


The volume V of an enclosure contains a mixture of three gases, 16 g of oxygen, 28 g of nitrogen and 44 g of carbon dioxide at absolute temperature T. Consider R as universal gas constant. The pressure of the mixture of gases is ______.


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