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3 years ago

Which variables can affect the speed of a chemical reaction? (Choose all that apply)

Chemistry

1 answer:

Leya [2.2K]3 years ago

7 0

Your answer is B(I'm not very much sure about this one), C, and D.

I hope very much that I am correct, hope this helps you.

~Onyx~

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What is this wave transferring to the tree?

Alexxandr [17]

Option 4 . Energy is transferred to the tree in this wave.

Explanation:

The figure shows that the rope is tied to tree at one end and at the other end a boy is holding it.

Here the boy swings the rope to give it a sudden movement and due to this movement the transverse waves of sinusoidal form are obtained and gets traveled till the tree.

Here the energy used by the boy to give a quick movement to the rope gets transferred till the other end of the rope that means the energy is getting transferred to the tree.

Along with the energy the particles of the way also gets transferred to the tree unless there is an obstacle.

Therefore in this wave energy is transferred to the tree.

3 0

2 years ago

How can you remember an individual element's ionic charge?

docker41 [41]

Answer:

write it down

Explanation:

6 0

3 years ago

Read 2 more answers

How have organisms changed over time, according to the fossil record?

Yuri [45]

Answer:

As the world changes, plants and animals change with it. Aside from a few living fossils, the species we see today are very different from species that lived in the past. Thus, the fossil record can be used to show that organisms changed to meet new conditions. This is the result of evolution of species over time.

hope this helps

have a good day :)

Explanation:

6 0

2 years ago

In a mixture of 3 gases what is the total pressure of the gases if Gas A exerts a pressure

kirill [66]

Answer:

760 mm of Hg

Explanation:

If the gases A , B and C are non reacting , then according to Dalton's Law of Partial Pressure the total pressure exerted is equal to sum of individual partial pressure of the gases .

If there are n , number of gases then ,

$P_{total}= P_1+P_2+P_3+\dots +P_n$

Here ,

Partial pressure of Gas A = 400mm of Hg
Partial pressure of Gas B = 220 mm of Hg
Partial pressure of Gas C = 140mm of Hg

Hence the total pressure exerted is ,

$P_{total}= P_{Gas\ A }+P_{Gas\ B }+P_{Gas\ C }$

Substitute ,

$P_{total}=( 400 + 220 + 140 )mm\ of \ Hg$

Add ,

$P_{total}= 760\ mm\ of \ Hg$

Hence the total pressure exerted by the gases is 760 mm of Hg.

I hope this helps.

4 0

2 years ago

Describe how gasoline, as a fuel, can undergo a chemical change.

kvasek [131]

Answer with Explanation:

A "chemical change" occurs when the structure of the molecules change. If there's no change in structure, it is called a "physical change." This also means that a chemical reaction has to occur for something to be considered a chemical change.

Gasoline when used as a fuel is being transformed into other forms of energy. It undergoes a process called "combustion."

When used as a fuel for cars, the gasoline is being burned to produce heat energy. This energy is then converted into mechanical energy that allows the car to move. Clearly, the gasoline has undergone a chemical change.

5 0

2 years ago