Answer:
Option D
Explanation:
Molarity (M) of any solution is equal to the number of moles (n)of solute in it divided by total volume of solution (V)
Mathematically, it can be represented as
Substituting the given values, we get-
Hence, option D is correct
Answer:
37064 J
Explanation:
Data Given:
mass of Steam (m) = 16.4 g
heat released (Q) = ?
Solution:
This question is related to the latent heat of condensation.
Latent heat of condensation is the amount of heat released when water vapors condenses to liquid.
Formula used
Q = m x Lc . . . . . (1)
where
Lc = specific latent heat of condensation
Latent heat of vaporization of water is exactly equal to heat of condensation with - charge
So, Latent heat of vaporization of water have a constant value
Latent heat of vaporization of water = 2260 J/g
So
Latent heat of condensation of water will be = - 2260 J/g
Put values in eq. 1
Q = (16.4 g) x (- 2260 J/g)
Q = - 37064 J
So, 37064 J of heat will be released negative sign indicate release of energy
Hey There!
Given that (NH4)2S is a Strong electrolyte.!!!
(NH4)2S ---> 2 NH⁴⁺ + S²⁻
The equation tells you that you get 2 amonium ions and 1 sulfide ion from each (NH4)2S
Hope that helps!
The increase in the average kinetic energy of the molecules needs the increase of temperature. The relation of ℃ and K is n ℃ = m K -273. So if we change all the K unit to ℃ unit, we can get the answer is (1).
The age of the universe is approximately 13.8 billion
years old. The universe is constantly expanding. A universe with a low density
of matter is older than a matter – dmominated one. To determine the density and
composition of the universe, scientists rely on missions such as NASA’s
Wilkinson Microwave Anisotropy Probe spacecraft. They measure the thermal
radiation left from Big Bang.
