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saul85 [17]
3 years ago
10

When ammonium nitrate dissolves in water, the solution becomes cold.

Chemistry
1 answer:
KATRIN_1 [288]3 years ago
4 0

B.

Delta G is negative and Delta S is positive.

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How many atoms does 2NaOH have
saul85 [17]
The substance of 2 Naoh contains 6 atoms
8 0
4 years ago
Read 2 more answers
Hydrogen and helium cannot condense to gas at temperatures above water's freezing point. when planets would be made of gas?
kodGreya [7K]

Answer:

no.

Explanation:

only one planet would be made gas

is earth. and for what you mean like when

planet would be made of gas my answer is no

because theirs so gravity but im not the one

who's deciding and god is the one who's deciding

if when is the other planet having a gas

i know im wrong

8 0
3 years ago
If 7.84 × 107 J of energy is released from a fusion reaction, what amount of mass in kilograms would be lost? Recall that c = 3
yanalaym [24]
The correct answer would be 8.71 × 10<span>–10</span>
6 0
3 years ago
Nitrogen gas at 300 k and 200 kpa is throttled adiabatically to a pressure of 100 kpa if the change in kinetic energy is negligb
erastovalidia [21]

Answer:

The temperature of the Nitrogen after throttling is  T_2 = 300 \  K

Explanation:

From the question we are told that

   The  temperature is  T_1 =  300 \  K

    The pressure is  P =  200 \  kPa  =  200 * 10^{3} \  Pa

    The pressure after being  P_1 =  100 \  kPa =  100 * 10^{3} \  Pa

   

Generally from the first law of thermodynamics we have that

      Q - W =  \Delta U + \Delta  K

Here \Delta U  is the change internal  energy which is mathematically represented as

            \Delta U =  C_p  (T_2 - T_1)

Here      C_p is the specific heat of the gas at constant pressure

        \Delta K  is the change kinetic energy which is negligible

         Q  is the thermal  energy  which is Zero for an adiabatic process

         W  is the work done and the value is zero given that the gas was throttled adiabatically

So

      0=  \Delta U +0

=>   \Delta U  = 0

=>  (T_2 - 300)  = 0

=>   T_2 = 300 \  K

     

3 0
3 years ago
Describe the orbital diagram of an atom with eight electrons. Explain how this orbital diagram demonstrates Hund's rule.
HACTEHA [7]
The closer the orbitals are to the nucleus, the lower they are in energy.
Atomic orbitals are filled with electrons the energy goes from lowest to highest
When multiple orbitals of equal energy have only one electron, the electrons in each must all have the same spin. However, the orbital diagram violates Hunds Rule.

Pauli's exclusion principle states that in an atom or molecule, no two electrons can have the same four quantum numbers. As an orbital can contain a maximum of only two electrons, the two electrons must have opposing spins.

Hund's rule of maximum multiplicity states that every orbital in a subshell is singly occupied with one electron before any one orbital is doubly occupied, and all electrons in singly occupied orbitals have the same spin.
4 0
3 years ago
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