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BlackZzzverrR [31]
3 years ago
5

How many atoms does C₆H₄Cl₂ have?

Chemistry
1 answer:
Charra [1.4K]3 years ago
6 0

Answer:

There are 12 atoms in the compound

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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
If you use 65.34 g of Al2S3, how many grams of AICl3 can be produced?​
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Answer:

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3 years ago
PLZ HELP Question 14 of 25 What is the name for a representation of the physical world?
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Model

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A model of anything is something you make to represent it in it's physical world form

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1. a) Binary ionic and binary molecular compounds have what two things that are similar in their composition? (b) What is one wa
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Binary compounds consist of only two distinct elements, regardless of whether the compound is ionic or molecular. Water is a binary compound, as are calcium chloride, ammonia, and potassium iodide. 

<span>An ionic binary compound consists of cations of one element and anions of another. KI is an ionic binary compound, composed of K cations and I anions. </span>

<span>A molecular binary compound does not consist of discrete ions, but of molecules. H2O is molecular, as is NH3.</span>
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1<br> According to the text, what is reduction?
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You forgot to attach the text

BTW reduction is the action or fact of making a specified thing smaller or less in amount, degree, or size.
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3 years ago
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