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3 years ago

How many moles of dinitrogen monoxide are present in 9.3 x 10^22 molecules of this compound?

Chemistry

1 answer:

Step2247 [10]3 years ago

8 0

Answer:

<h2>0.15 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

$n = \frac{9.3 \times {10}^{22} }{6.02 \times {10}^{23} } \\ = 0.154485...$

We have the final answer as

<h3>0.15 moles</h3>

Hope this helps you

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Alexxandr [17]

Answer:

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Acceleration of kick ball:

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2 years ago

A chemical reaction that ______ energy can be used to heat up other substances.

Luba_88 [7]

Answer: Release

Explanation:

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2 years ago

The percent of remaining parent isotope in a radioactive decay process is 40 percent. How many half-lives have elapsed since the

muminat

Answer: Between 1 and 2.

Explanation:

Half life is the amount of time taken by a radioactive material to decay to half of its original value.

$a=\frac{a_o}{2^n}$ ............(1)

where,

a = amount of reactant left after n-half lives = 40

$a_o$ = Initial amount of the reactant = 100

n = number of half lives

Putting in the values we get:

$40=\frac{100}{2^n}$

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3 years ago