There are 3 isotopes of hydrogen
Answer: uh
Explanation:
Could you give a more in depth question?
Explanation:
The most reactive metals are found on the left of the periodic table, in the blue column, known as the alkali metals. Their reactivity increases as we go down column (group) one. Reactive metals, when attached to less reactive metals, have the ability to prevent the less reactive metal from rusting.
We Know, Atomic number of Uranium = 92
Molar mass in given species = 233
Now, Molar mass = Number of Protons + Number of Neutrons
233 = 92 + x
x = 233 - 92
x = 141
So, your final answer is 141
Hope this helps!
Answer: The true statements are following:
- Energy of the universe is constant; the entropy of the universe increases.
- If a process increases the randomness of the particles of a system, the entropy of the system increases.
- All spontaneous processes release heat.
- Both and must equal zero at equilibrium.
Explanation:
Spontaneous reactions are defined as the reaction which occur on its own and they do not require any external force to start.
- All spontaneous reactions show a positive value for change in entropy. Each spontaneous reaction requires different amount of time.
Hence, the statement all spontaneous reactions occur quickly, is false.
- Entropy of the Universe always increases and energy always changes from one form to another. Hence, the statement energy of the universe is constant; the entropy of the universe increases, is true.
- As entropy is the degree of randomness. So, with increases the randomness of the particles of a system there will also be increase in randomness.
Therefore, the statement if a process increases the randomness of the particles of a system, the entropy of the system increases, is true.
- Some processes are non-spontaneous in nature. Hence, the statement all systems become more disordered spontaneously, is false.
- Since, randomness between the molecules increases so, heat is eventually released in all spontaneous processes. Therefore, the statement all spontaneous processes release heat, is true.
- For a reversible process, entropy change of the Universe is equal to 0. Therefore,
Hence, the statement both and must equal zero at equilibrium, is true.