Answer:
A the answer is A I'm sure
Answer:
1. Ok, so you have a 1:1 ratio of FeCl2 to FeCl3, which is shown by the fact that if you react 2 moles of FeCl2 you get 2 moles of FeCl3. So therefore, if you react 4 moles of FeCl2, you'd form 4 moles of FeCl3.
2. You have a 1:2 ratio of Cl2 to FeCl2, for every 1 mole of Cl2, you need 2 moles of FeCl2, so therefore, for 7 moles of Cl2, you need 2x7moles = 14 moles
3. 1:1 ratio. So you start with 2.28moles.
4. 1:2 ratio of Cl2 to FeCl2, so therefore to get from FeCl2 to Cl2 you need to divide by 2. Therefore, you need 3.25moles / 2 = 1.625 moles
Explanation:
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<u>Explanation:</u>
There are 3 states of matter:
<u>Solid state:</u> In this state of matter, the particles are closely packed and they do not have any space between them. Thus, this state of matter has the highest intermolecular forces of attraction between them.
The kinetic energy of the solid particles is the least.
<u>Liquid state:</u> In this state of matter, the particles are present in random and irregular pattern. The particles are closely arranged but they can move from one place to another. The intermolecular forces between the particles are less as compared to the solid state.
The kinetic energy of the liquid particles lie in the intermediate of solid and gases.
<u>Gaseous state:</u> In this state, the particles are loosely arranged and have a lot of space between them. Thus, this state of matter has the lowest intermolecular forces of attraction between them.
The kinetic energy of the gaseous particles is the highest.
- <u>Conversion of solid to liquid:</u>
The spacing between the particles increases and so does the kinetic energy. The particles which were closely packed, on getting converted to liquid particles are now present in random and irregular pattern.
- <u>Conversion of liquid to gas:</u>
The spacing between the particles increases and so does the kinetic energy. The particles which were present in irregular pattern, on getting converted to gas particles are now loosely arranged.
"The reaction is exothermic and ΔH is negative" can be understood about the reaction and the enthalpy change (ΔH) during the reaction.
<u>Option: D</u>
<u>Explanation:</u>
When the reaction is positive, the process becomes endothermic, i.e. heat appears to be consumed by the system because the reaction products are more enthalpic than the reactants. When the reaction is negative, on the other hand, the process is exothermic, which is the total decrease in enthalpy is caused by heat production. Here the initial temperature is 21.0 C but increase in final temperature to 38.8 C, because if some processes require heat, others must give off heat when they take place.