Advertisements
Advertisements
प्रश्न
Convert the following temperature from degree Celcius to kelvin.
−15° C
Advertisements
उत्तर
T(K) = t° C + 273.15
∴ T(K) = −15° C + 273.15
= 258.15 K
APPEARS IN
संबंधित प्रश्न
Explain Why?
"When stating the volume of a gas, the pressure and temperature should also be given."
Give reason for the following:
Gases exert pressure in all directions.
State the following:
The absolute temperature of a gas at 7°C
Convert the following temperature from degree Celcius to kelvin.
−197° C
Convert exactly 1.5 atm to pascals
Convert 89 kPa to newton per square metre (Nm−2)
Identify the gas laws from the following diagram.
| Diagram | Gas laws |
 |
______________ |
Identify the gas laws from the following diagram.
| Diagram | Gas laws |
 |
______________ |
Consider a sample of a gas in a cylinder with a movable piston.
Show diagrammatically the changes in the position of the piston, if the temperature is decreased from 300 K to 150 K at constant pressure.
With the help of the graph answer the following -
At constant temperature, Identify the law.
With the help of the graph answer the following -
At constant temperature, Write the statement of law.
Solve the following.
The volume of a given mass of a gas at 0°C is 2 dm3. Calculate the new volume of the gas at constant pressure when the temperature is increased by 10°C.
Solve the following.
The volume of a given mass of a gas at 0°C is 2 dm3. Calculate the new volume of the gas at constant pressure when the temperature is decreased by 10°C.
Use of hot air balloon in sports and meteorological observation is an application of
Assertion: Critical temperature of CO2 is 304 K, it can be liquefied above 304 K.
Reason: For a given mass of gas, volume is to directly proportional to pressure at constant temperature
State Boyle's law.
Explain the following observation.
The size of a weather balloon becomes larger and larger as it ascends up to larger altitude
A sample of gas has a volume of 8.5 dm3 at an unknown temperature. When the sample is submerged in ice water at 0°C, its volume gets reduced to 6.37 dm3. What is its initial temperature?
Of two samples of nitrogen gas, sample A contains 1.5 moles of nitrogen in a vessel of the volume of 37.6 dm3 at 298 K, and sample B is in a vessel of volume 16.5 dm3 at 298 K. Calculate the number of moles in sample B.
A small bubble rises from the bottom of a lake where the temperature and pressure are 6°C and 4 atm. to the water surface, where the temperature is 25°C and pressure is 1 atm. Calculate the final volume in (mL) of the bubble, if its initial volume is 1.5 mL.
Hydrochloric acid is treated with a metal to produce hydrogen gas. Suppose a student carries out this reaction and collects a volume of 154.4 × 10−3 dm3 of a gas at a pressure of 742 mm of Hg at a temperature of 298 K. What mass of hydrogen gas (in mg) did the student collect?
At 25°C and 1 atm, a cylinder containing 10 L of an ideal gas is connected to the empty cylinder with a capacity of 20 L. The pressures exerted by gas m both the cylinders will be ____________.
For a given mass of an ideal gas, which of the following statements is CORRECT?
Volume of a balloon at 25°C and 1 bar pressure is 2.27 L. If the pressure of the gas in balloon is reduced to 0.227 bar, what is the rise in volume of a gas?
If 2 moles of an ideal gas at 546 K has volume of 44.8 L, then what will be it's pressure? (R = 0.082)
At what temperature, the volume of gas would become zero?
Identify the correct relationship between pressure (P), density (d), molar mass (M) and Temperature (T) for an ideal gas from the following.
