Answer:
No state of matter is required
Explanation:
When <em>radiant energy </em>is the source, we are talking about <em>energy transfer by radiation, </em>so matter is not needed for the energy to be transfered.
An example of this could be the Sun, it heats up the Earth by radiation, even through the vacuum of outer space, where there is next to no matter.
Answer:
C; ΔSuniv>0
Explanation:
In this question, we want to select which of the options must be true.
What we should understand is that for a process to be spontaneous, the change in entropy must be greater than 0 i.e the change in entropy must be positive.
Looking at the options we have; option C is the correct answer.
Option B looks correct but it is wrong. This is because if change in universal entropy is greater than zero, then change in Gibbs free energy must be less than zero for spontaneity to occur
0005 * 0.002 = 5 * 0.002 = 0.010 = 10^-2
Answer:
You get Ca(II)H^2
Explanation:
This is a reaction type equation calcium reacts with HA and forms a bond.
Answer- The correct answer is ammonia.
Explanation- All other compounds that are formed do not have any essence of Nitrogen in it. Whereas, Methane is a compound with carbon and hydrogen as elements while water has hydrogen and oxygen as its elements.
Lastly Hydrogen and chlorine combined together to form hydrochloric acid. Hence the only compound left with nitrogen is ammonia and has nitrogen and hydrogen as its basic elements.
