Answer:
d) All have identical pressures
Explanation:
The kinetic molecular theory explains how gas molecules behave in a container. By this theory, the gas particles behave like hard, spherical objects in a state of constant, random motion; these particles collide between them and at the walls of the container. Besides, the kinetic energy of the gas depends only on the temperature.
The pressure is the force that the particles are applying under some area, so by the theory, it depends on the number of moles (amount of particles that collides and make the force), the volume of the container and the kinetic energy, or the temperature.
Because all gases have the same number of moles and are at the same temperature and the same volume, they'll have the same pressure.
Answer:
maximum possible volume flow rate = V = 0.5m^3/s
Explanation:
Given power consumed = 3.5kW
pressure difference ( delta -P) = 7kPa
let maximum possible volume flow rate = V
The rate of flow of work = W = V x Delta -P
hence, V = W/delta P
V = 3.5/7
V = 0.5m^3/s
Answer:
Age of rock = 722 million years old
Explanation:
Using the formula; <em>fraction remaining = 0.5ⁿ</em>
where n = number of half lives elapsed.
However, from the given values, fraction remaining = 1.000 - 0.0105
fraction remaining = 0.9895
Substituting in the formula to determine the number of half-lives:
0.9895 = 0.5ⁿ
log 0.9895 = n log 0.5
-0.0045842 = -0.30103 n
number of half lives elapsed, n = 0.0152
Therefore age of rock = 0.0152 x 4.75 x 10¹⁰ years = 7.22 x10⁸ years
Age of rock = 722 million years old
Answer:
The balanced chemical equation is :

Explanation:
The chemical equation in which number of atoms in reactants is equal to products is called balanced equation.
Formula of , Beryllium Chloride :
Beryllium Nitrate : 
Silver Chloride : 
Silver Nitrate :
When beryllium chloride reacts with dissolved silver nitrate in water , following reaction occur :

The number of atoms in reactant as well as in products are balanced :
Be = 1
Ag = 2
N =2
O = 6
Cl = 2
Explanation:
The given data is as follows.
= 253.4 nm =
(as 1 nm =
)
= 5,
= ?
Relation between energy and wavelength is as follows.
E = 
= 
=
J
= 
Hence, energy released is
.
Also, we known that change in energy will be as follows.

where, Z = atomic number of the given element


0.02 + 0.04 = 
= 
= 4
Thus, we can conclude that the principal quantum number of the lower-energy state corresponding to this emission is n = 4.