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nika2105 [10]
3 years ago
10

Which statement defines activation energy?

Chemistry
2 answers:
Kisachek [45]3 years ago
7 0
I believe that the best answer among the choices provided by the question is <span>It is the difference between reactant energy and maximum energy. 
</span>
Hope my answer would be a great help for you.    If you have more questions feel free to ask here at Brainly.
KatRina [158]3 years ago
4 0

Answer:

Explanation:

Activation energy is the minimum amount of energy required to begin a reaction.

Reactants have their own certain amount of energy which is known as internal energy and represented by E_{R}. A reaction involves an energy barrier that needs to be crossed by the reactants in order to form the products. This energy barrier is the activation energy.

A reaction that does not have activation energy will not take place at all.  

Therefore, the statement which defines activation energy is that it is the difference between reactant energy and maximum energy.  

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when riding bumper cars at the fair you bump into your friend and your car bounces backwards which law of motion is this
weeeeeb [17]

Newton's third law of interaction, says that if one body exerts a force on a second body, the second body exerts a force equal in magnitude and opposite in direction on the first body. It's the law of action-reaction, and it helps to explain why you feel a jolt when you collide with another bumper car.

6 0
3 years ago
In each of the following blanks, only enter a numerical value.
tatiyna

Answer:

1) 1,... 2

2) 18

3) n= 3 and I=1

Explanation:

1) when l= 0, its an s-sub-level, and only 1 orbital is possible which can carry only 2-electrons

2) the maximum number of electron is given by 2n^2= 2×3^2= 18

3) in 3p, the coefficient of p is the value of n= 3 and l-value of P is 1

5 0
3 years ago
Which is an example of an instinct?
kompoz [17]

Answer:

An innate, typically fixed pattern of behavior in animals in response to certain stimuli.

5 0
2 years ago
a sample of carbon dioxide contains 3.8 moles of oxygen atoms, how many moles of carbon dioxide are in the sample?
dedylja [7]
<h3>Answer:</h3>

1.9 moles

<h3>Explanation:</h3>

Carbon dioxide (CO₂) is a compound that is made up of carbon and oxygen elements.

It contains 2 moles of oxygen atoms and 1 mole of carbon atoms

Therefore;

We would say, 1 mole of CO₂ → 2 moles of Oxygen atoms + 1 mole of carbon atoms

Thus;

If a sample of CO₂ contains 3.8 moles of oxygen atoms we could use mole ratio to determine the moles of CO₂

Mole ratio of CO₂ to Oxygen is 1 : 2

Therefore;

Moles of CO₂ = 3.8 moles ÷ 2

                      = 1.9 moles

Hence, the moles of CO₂ present in a sample that would produce 3.8 moles of Oxygen atoms is 1.9 moles

6 0
3 years ago
15. A 15.30 g sample of calcium (Ca) combines with 7.96 g of sulfur(S) to form calcium sulfide
BlackZzzverrR [31]

Answer:

17.689g

Explanation:

1: First, write out the equation you will follow:

Ca + S ⇒ CaS

2: Use the formula Mass = Mr x moles to work out the moles of both Ca and S - this will enable you to find the limiting reactant.

3: Moles Ca:

Moles = mass/ Mr = 15.3/ 40.1 = 0.382 moles.

4: Moles S:

Moles = mass/ Mr = 7.96/ 32.1 = 0.245 moles.

5: We now know S is the limiting reactant, and as there is a 1:1 ratio between S and CaS, there will also be 0.245 moles CaS.

6: Mass CaS:

Mass = Mr x moles = 72.2 x 0.245 = 17.689g

6 0
3 years ago
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