The correct answer is greenhouse gases. It is the most abundant gases among the choices in the atmosphere. These gases are water vapor, methane, nitrous oxide, ozone and carbon dioxide. Without these gases, the temperature of Earth will be about -18 degrees Celsius.
Answer:
B. Alpha
Explanation:
Alpha decays always split into an element and He.
Beta decays always split into an element and e- (eletrons).
Gamma decays always split into an element and radiation.
Answer:
A
Explanation:
<h2>#keep learning </h2><h3>hope makatulong</h3>
Explanation:
Molar mass of HBr = 81 g/mol
Molar mass of nitrogen dioxide gas = 46 g/mol
Molar mass of ethane = 30 g/mol
Graham's Law states that the rate of effusion or diffusion of gas is inversely proportional to the square root of the molar mass of the gas. The equation given by this law follows the equation:
![\text{Rate of diffusion}\propto \frac{1}{\sqrt{\text{Molar mass of the gas}}}](https://tex.z-dn.net/?f=%5Ctext%7BRate%20of%20diffusion%7D%5Cpropto%20%5Cfrac%7B1%7D%7B%5Csqrt%7B%5Ctext%7BMolar%20mass%20of%20the%20gas%7D%7D%7D)
So, the gas with least molar mass will effuse out fastest from the container and that is ethane gas.
The formula for average kinetic energy is:
![K.E=\frac{3}{2}kT](https://tex.z-dn.net/?f=K.E%3D%5Cfrac%7B3%7D%7B2%7DkT)
where,
k = Boltzmann’s constant = ![1.38\times 10^{-23}J/K](https://tex.z-dn.net/?f=1.38%5Ctimes%2010%5E%7B-23%7DJ%2FK)
T = temperature = 273.15 K ( at STP)
As we can see from the formula that kinetic energy depends upon only temperature of the gas molecule.
So, from this we can say that all the gas molecules have the same average kinetic energy at this temperature.