Reaction rates are affected by how often the particles collide true false

2 answers:

7 0

True..........................

4 0

This is true.

The reaction rates are affected by how often the particles collide.

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-Dominant- [34]

Answer:

<h2>6.64 moles</h2>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

$n = \frac{N}{L} \\$

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

$n = \frac{4 \times {10}^{24} }{6.02 \times {10}^{23} } \\ = 6.644518...$

We have the final answer as

<h3>6.64 moles</h3>

Hope this helps you

3 0

3 years ago

Eddi Din [679]

The answer is a change in internal energy causes work to be done and heat to flow into the system.

<u>Explanation:</u>

The first law of thermodynamics is a similar version of the law of conservation of energy where the energy can neither be created nor be destroyed, it can be transformed from one form to the other.
It also defines that the work is done and heat flowing into the system is due to the change in internal energy. The sum of all energy including kinetic and potential energy except the displaced energy to the surrounding is known as internal energy.
ΔU represents the change in internal energy of the system, Q represents the net heat transferred into the system, and W represents the net work done by the system. So +ve Q adds energy to the system and =ve W takes energy from the system. Thus ΔU=Q−W.

8 0

3 years ago

hodyreva [135]

I think c is correct answer
.............

3 0

3 years ago

Sladkaya [172]

B positive and negative ion