Answer: d) -705.55 kJ
Explanation:
Heat of reaction is the change of enthalpy during a chemical reaction with all substances in their standard states.
Reversing the reaction, changes the sign of
On multiplying the reaction by , enthalpy gets half:
Thus the enthalpy change for the given reaction is -705.55kJ
Answer: condensate.
Explanation.
1) You need a table with the boiling and freezing point of nitrogen to check the states at each given temperature.
2) Since the boling point of nitrogen is - 195.8, you know that at - 170°C it is a gas.
3) Since the freezing point of nitrogen is - 210°C, you know that at - 200°C it is liquid.
4) Then, nitrogen passed from gas to lquid, which is descripted by the condensation process, so it is said that it condensated (the gas became liquid).
Answer:
Final temperature = 6.00 °C
Explanation:
The expression for the calculation of the enthalpy change of a process is shown below as:-
Where,
is the enthalpy change
m is the mass
C is the specific heat capacity
is the temperature change
Thus, given that:-
Mass of water = 200.0 g
Specific heat = 4.18 J/g°C
Let final temperature be x °C
= -11.7 kJ (Negative sign as heat is lost)
Also, 1 kJ = 1000 kJ
= -11700 J
So,
Final temperature = 6.00 °C
An Ecosystem is made up of all the living and nonliving factors in an area.
Why not an Asteroid nor a continent?
An asteroid is any small rocky object in the inner solar system.
A continent is one of several very large landmasses of the world. Such as North and South America, Australia, Africa, Europe and Asia.
Hope this helps you!