Answer: The final temperature of the gas is 7.58 °C.
Explanation: We are given initial and final pressure of the system and we need to find the final temperature of the system.
To calculate it, we use the equation given by Gay-Lussac.
His law states that pressure is directly related to the temperature of the gas.
Or,
where,
= initial pressure = 893 mmHg = 1.175atm (Conversion factor: 1atm = 760mmHg)
= initial temperature = 49.3°C = [49.3 + 273.15]K = 322.45K
= Final pressure = 778mmHg = 1.023atm
= Final temperature = ?°C
Putting values in above equation, we get:
Converting Final temperature from kelvin to degree Celsius.
Hence, the final temperature of the gas is 7.58 °C.
The amount of heat needed would be the specific heat multiplied by the mass of the substance and the temperature difference. In this case, the mass would be 75.0–g, the specific heat would be 0.449 j/g °c, and the temperature difference would be <span>1535 -25= 1510
Then the calculation would be: </span>0.449 j/g °c * 75g * 1510°c = 50,849.25J
In calorie it would be: 50849.25J / 4.184J/cal= 12,153.26 calorie
Answer: Solid, Liquids, Plasma. Gas.
Explanation:
It retains its shape regardless of the shape of the container----- Solid
Particles move freely but do not separate from neighboring particles---- Liquids
This state, in which the particles are at extremely high temperatures, is rarely found on Earth---- Plasma
It expands to fill the volume of the container.------- Gas
There are four states of matter, of which the common ones are
Gases- whose particles are compressible and takes the shape and volume of its container
, Liquids - whose particles freely slide over each other and assumes the shape of the part of the container which they occupy and
Solids whose particles are rigid and maintain thier fixed volume and shape regardless of the container they are put .
The last one is the Plasma, a rare state of matter not common to earth nwhose particles are so hot that they exist around the sun, stars and outer space.
Boron trichloride has a simple molecular structure,
whereas sodium chloride has a giant ionic lattice
structure. The ionic bonding between oppositely
charged ions in NaCl is stronger than the covalent
intramolecular bonding in BCl3. Therefore, less energy
is required to break the intramolecular covalent bonds in
BCl3, hence a lower melting temperature.