<u>Answer:</u> The equilibrium partial pressure of phosgene is 7.34 atm
<u>Explanation:</u>
The given chemical equation follows:

The expression of
for above equation follows:

We are given:
Equilibrium partial pressure of CO = 
Equilibrium partial pressure of chlorine gas = 

Putting values in above equation, we get:

Hence, the equilibrium partial pressure of phosgene is 7.34 atm
Answer:
Q = -22.9 kJ
Explanation:
Given that,
Mass of water, m = 150.3 g
Water gets cool from 25.60°C to -10.70°C.
The specific heat of water, c = 4.2 J/g°C
The formula for heat needed is given by :

So, 22.9 kJ of heat is needed to be removed to cool.
Answer:
C.
Explanation:
Exothermic means the energy of products is lower than energy of reactants. Transition state will always be the highest energy among the two.
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.