2 years ago

How many neutrons does this atom have?

Chemistry

2 answers:

Marizza181 [45]2 years ago

8 0

Answer:

the ander is B. 6 neurons

Vinil7 [7]2 years ago

7 0

Answer:

Explanation:

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A wooden artifact from an ancient tomb contains 60% of the carbon-14 that is present in living trees. How long ago was the artif

noname [10]

Answer:

The age of the sample is 4224 years.

Explanation:

Let the age of the sample be t years old.

Initial mass percentage of carbon-14 in an artifact = 100%

Initial mass of carbon-14 in an artifact = $[A_o]$

Final mass percentage of carbon-14 in an artifact t years = 60%

Final mass of carbon-14 in an artifact = $[A]=0.06[A_o]$

Half life of the carbon-14 = $t_{1/2}=5730 years$

$k=\frac{0.693}{t_{1/2}}$

$[A]=[A_o]\times e^{-kt}$

$[A]=[A_o]\times e^{-\frac{0.693}{t_{1/2}}\times t}$

$0.60[A_o]=[A_o]\times e^{-\frac{0.693}{5730 year}\times t}$

Solving for t:

t = 4223.71 years ≈ 4224 years

The age of the sample is 4224 years.

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3 years ago

Which statement is true about the concentration of the reactants and products in chemical equilibrium?

bulgar [2K]

Answer:

Ans: 2

Explanation:

The concentration of reactants and the concentration of products are constant.

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2 years ago

Someone help answer this

alexandr402 [8]

it is water energy :) this is easy

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3 years ago

Read 2 more answers

PLEASE ANSWER

Otrada [13]

Answer:

The answer is D) White Light!

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3 years ago

The reaction of an alkene and water in the presence of an acid catalyst to produce an alcohol is called ________.

pochemuha

The answer I believe is Hydration

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2 years ago