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sergejj [24]
2 years ago
8

Is each of these statements true? If not, explain why.(e) If reactant molecules collide with greater energy than the activation

energy, they change into product molecules.
Chemistry
1 answer:
Natali5045456 [20]2 years ago
3 0

If reactant molecules collide with greater energy than the activation energy, they change into product molecules is true.

<h3>What is activation energy?</h3>

The activation energy is the minimum amount of energy that is required to be absorbed or supplied to the reactant in the reaction to become their energy which is equal to the threshold energy.

The threshold energy depends on the molecule's decision which must be in order but must be an effective collision that is the minimum amount of energy needed for collision.

Therefore, the statement is true that reactant molecules collide with greater energy than the activation energy, they change into product molecules.

Learn more about activation energy, here:

brainly.com/question/20261559

#SPJ4

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30 POINTS! ----- How many moles of oxygen gas are needed to completely react with 145 grams of aluminum? Report your answer with
gladu [14]
First a balanced reaction equation must be established:
4Al _{(s)}    +   3 O_{2}  _{(g)}     →    2 Al_{2} O_{3}

Now if mass of aluminum = 145 g
the moles of aluminum = (MASS) ÷ (MOLAR MASS) = 145 g ÷ 30 g/mol
                                                                                    =  4.83 mols

Now the mole ratio of Al : O₂ based on the equation is  4 : 3  
                                                                [4Al  + 3 O₂ → 2 Al₂O₃]

∴ if moles of Al = 4.83 moles
  then moles of O₂ = (4.83 mol ÷ 4) × 3
                              =  3.63 mol   (to  2 sig. fig.) 

Thus it can be concluded that 3.63 moles of oxygen is needed to react completely with 145 g of aluminum. 


     
4 0
4 years ago
Which property is true for metals
san4es73 [151]

most metals conduct electricity and are very dull to the look. most metals are toxic if eaten and are hard.

aluminum is a type of metal they is softer than the opther and conducts eletricty like a boss.

nickel on the opther hand is also a metal but does not conduct a lot of electricy.

metals can be bent and others can break,

6 0
3 years ago
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E

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8 0
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