Oxygen- atomic number 8
1s² 2s² 2px² 2py¹ 2pz¹
You don’t have any answer chooses listed but i’ll say F isn’t a molecule because it stands for fluorine which happens to be an element that only has one atom when a molecule is supposed to have two or more atoms.
Answer:
The answer is A
Explanation:
i just took the asignment
The mass of reactant that would produce 800 Joules of heat is equal to 800 J × (1 kJ/1000 J)/(24.7 kJ/g).
<h3>How to calculate the mass of reactant?</h3>
In order to determine the mass of reactant that would produce 800 Joules of heat, we would set up a conversion equation as follows:
<u>Note:</u> 1 kJ is equal to 1000 Joules.
<u>Conversion:</u>
1 gram = 24.7 kJ
X gram = 800 Joules
Therefore, the mass of reactant that would produce 800 Joules of heat is given by:
Mass = Heat × (conversion factor/rate of heat)
Mass = 800 J × (1 kJ/1000 J)/(24.7 kJ/g).
Read more on heat here: brainly.com/question/5140667
#SPJ1
<u>Complete Question:</u>
A certain chemical reaction releases 24.7 kJ/g of heat for each gram of reactant consumed. How can you calculate what mass of reactant will produce 800 Joules of heat?
Answer: 5 → 2
Explanation: An electron when given enough energy will get excited to the higher states and when it returns to the ground state will emit energy in the from of light.
The most energetic energy level will be 5 → 2 because in this, energy level 2 is the ground state and energy level 5 is the excited state . Thus more energy will be needed by the electron to move towards the higher excited state.
The energy required by the 4 → 2 energy level will be of medium level and
3 → 2 will require the least energy.
The image for the reference is shown below.
