CHEMISTRY HIGH SCHOOL

The minimum energy required to start a reaction is: enthalpy (E1) enthalpy (E2) activation energy (A.E.) heat of reaction

Answers

Answer 1
Answer: The answer is activation energy. This is the minimum amount of energy needed to start a reaction. This is introduced by Svante Arrhenius. Also, it is the maximum amount of energy required. Activation energy can also be thought of the energy barrier.
Answer 2
Answer:

The minimum energy required to start a reaction is called activation energy (A.E.).

(Option C)

What is activation energy?

Activation energy is the energy barrier that reactant molecules must overcome to transform into products during a chemical reaction.

It is the energy difference between the energy levels of the reactants and the transition state on the reaction's potential energy diagram.

Enthalpy (E1 and E2) and heat of reaction are related to the energy changes during the course of a reaction but are not directly related to the energy barrier required to initiate the reaction.

Enthalpy (H) refers to the total heat content of a system, while heat of reaction (ΔH) represents the energy difference between the products and reactants at constant pressure.

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If the sum of the mass of the reactants is 12.5 what would be the sum of the products be? And explain how you know this

Answers

If all the reactants will react and become products, the mass will be 12.5 g. Because the mass of the matter amount will not change during the reaction.

Explain, in terms of electron configuration, why oxygen atoms and sulfur atoms form compounds with similar molecular structures

Answers

Oxygen atoms and sulfur atoms form compounds with similar molecular structures because if you look at these two, they both have six electrons in their valence shells. Therefore, they will generally react in much the same manner. I hope this helps you on your assignment.

Can someone help plsCalculate the mass in grams of hydrogen chloride produced when 5.6 L of molecular hydrogen measured at STP react with an excess of molecular chlorine gas.

Answers

18.22 g of hydrogen chloride produced when 5.6 L of molecular hydrogen measured at STP react with an excess of molecular chlorine gas.

What is STP and how the amount of HCL came out to be 18.22 grams after the reaction?

  1. STP is standard temperature and pressure which is taken into account in the question to compare the value to standardized values.
  2. Here is given 5.6 L of hydrogen measured at STP reacting with an excess of chlorine gas.
  3. According to STP, T = 273 K , P= 1 atm , R = 0.0821L atm/K mol. The equation would be like: H2 + Cl2 = 2HCl .
  4. Now using ideal gas law , PV =nRT , n =PV/RT = 1 x 5.6L/0.0821Latm/K mol x 273 = 0.2498 mol.
  5. Now molar mass of HCl = 0.4996 x 36.485 = 18.22 g . Hence the amount of HCl produced would be 18.22 grams.

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PLEASE HELP HURRY (Physical Science)


Use Newton’s Law to explain why a bowling ball will slow down and stop when rolled in a flat surface, like a street.

Answers

Answer:

Force is must to change the velocity of an object. Force is always equal to the mass of the object times its acceleration.

Explanation:

From the second law of Newton, it  states that the force is the product of mass of an object and its acceleration. Here, when the bowling ball is rolling across a flat surface, frictional force acts on it which oppose the motion of the ball and causes deceleration of the ball. This is an example of rolling friction. Acceleration of the bowling ball depends directly to the force of friction and indirectly to its mass.

Why could a recycling or recovery machine using a hermetic compressor overheat while in deep vacuum?

Answers

Answer:

Explanation:fsthy add

eleanor wants to show her class a comparison of melting rates between two different solids when he is applied why would a graph be more suitable than a table to show her data

Answers

Eleanor wants to show her class a comparison of melting rates between two different solids when heat is applied. A graph would be more suitable than a table to show her data because the she can see the trend line of the effects of melting than the table.
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