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Marizza181 [45]
3 years ago
7

Which is usually associated with a faster reaction rate? A. shaking pepper into the reactants B. removing heat energy from the r

eactants C. using a highly concentrated solution in the reactants D. using a solid with a low surface area in the reactants
Chemistry
1 answer:
Andrews [41]3 years ago
3 0

Answer:

C. Using a highly concentrated solution of the reactants  

Explanation:

If the solutions are more concentrated, there will be more collisions per second between the reactants, so the rate will be faster.

A. is wrong. Pepper might make you sneeze, but it won't make the reaction go any faster.

B is wrong. Removing heat will cause the molecules to slow down, so fewer of them will have energy to get over the activation energy barrier.

D. is wrong. If a reactant has a small surface area, fewer of the other reactant molecules will be able to collide with it, so the reaction will slow down.

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Need helpppppp hurry pls, i just really need help
mojhsa [17]

Answer:

6.8 mole of O₂

Explanation:

Given expression:

       2H₂   +   O₂   →   2H₂O

Number of moles of H₂ = 13.6moles

Unknown:

Number of moles of O₂  = ?

Solution:

In the given problem, we are to find the number of moles of oxygen gas that will use up 13.6mole of hydrogen gas;

 From the reaction equation;

             2 mole of H₂ will completely react with 1 mole of O₂

         13.6 moles of H₂ will completely be used up by \frac{13.6}{2} mole of  O₂

                                                                                        = 6.8 mole of O₂

7 0
3 years ago
Which formula contains two nonmetals
VLD [36.1K]

Answer:

Nonmetal + Nonmetal —> covalent compound (usually)

Explanation:

Covalent compounds are formed when two nonmetals react with each other.

7 0
3 years ago
Will give brainliest, like, 5 stars and 5 points to best answer
Oliga [24]

evaporation systems allow for an endless source of water. you can grab cups of water straight from the sea or even a lake. the use of evaporation allows for you to drink water thats even healthier than getting it from a cloud and it will leave all of the bad parts that used to be in the water in the first container you pour into. this system is most useful in hot climates such as places near the equator.  

6 0
3 years ago
An atom has 2 protons in its nucleus . Which of the following must be true for this atom to have no net electrical charge
ehidna [41]
If an atom has 2 protons, then it must also have 2 electrons for there to be no charge. An extra electron will cause for you to have a negative charge, and if you have more protons than electrons, then you will have a positive charge. :)
7 0
3 years ago
What do acids and bases have in common apex?
disa [49]

Both acids and bases produce a part of a water molecule. Bases dissociate hydroxide (–OH) ions and acids, hydrogen (H+) ions that when combined form water. Both are also very corrosive when they are strong enough that they fully dissociate in water.

8 0
3 years ago
Read 2 more answers
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