The true statements about activation energy are as follows:
- Activation energy is the minimum quantity of energy that the reactants must possess in order to undergo a specified reaction.
- Activation energy is determined by the strength of the bonds that must be broken.
<h3>What is activation energy?</h3>
Activation energy is the minimum amount of energy that reactants in a chemical reaction must possess so as to get converted into products.
In a chemical reaction, reactants form products, hence, certain bonds must be broken in the reactant molecules to form the products.
The energy needed to break the bonds of the reactants is known as activation energy.
Therefore, the true statements about activation energy are as follows:
- Activation energy is the minimum quantity of energy that the reactants must possess in order to undergo a specified reaction.
- Activation energy is determined by the strength of the bonds that must be broken.
Learn more about activation energy at: brainly.com/question/11334504
Answer:
When fusion no longer generates enough pressure to counteract gravity, the star rapidly collapses to form a black hole.
hope it's clear!
Bromine : 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p5 (It has 35 electrons)
if I'm correct about this, I'm pretty sure that plants use photosynthesis to create their own food
Answer:
When <em>a scientist on Earth drops a hammer and a feather at the same time an astronaut on the moon drops a hammer and a feather, the result</em> expected is that <em>the hammer hits the ground before the feather on Earth, and the hammer and feather hit at the same time on the moon (option D).</em>
Explanation:
In the abscence of atmosphere (vacuum), the objects fall in free fall. This is, the only force acting on the objects is the gravitational pull, which is directed vertlcally downward.
Under such absecence of air, the equations that rules the motion are:
- V = Vo + gt
- d = Vo + gt² / 2
- Vf² = Vo² + 2gd
As you see, all those equations are independent of the mass and shape of the object. This explains why <em>when an astronaut on the moon drops a hammer and a feather at the same time</em>, <em>the hammer and feather hit at the same time on the moon</em>, a space body where the gravitational attraction is so small (approximately 1/6 of the gravitational acceleration on Earth) that does not retain atmosphere.
On the other hand, the air (atmosphere) present in Earth will exert a considerable drag force on the feather (given its shape and small mass), slowing it down, whereas, the effect of the air on the hammer is almost neglectable. In general and as an approximation, the motion of the heavy bodies that fall near the surface is ruled by the free fall equations shown above, so, <em>the result </em>that is<em> expected when a scientist on Earth drops a hammer and a feather at the same time is that the hammer hits the ground before the feather</em>.