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chubhunter [2.5K]
3 years ago
14

suppose you have a sample of an unknown mineral with a mass of 86g. you placed the sample in agrduated cylinder filled with wate

r to the 55mL mark. the sample sinks to the bottom of the cylinder and the water level rises to the 71 mL mark . wat is the density?
Chemistry
1 answer:
mariarad [96]3 years ago
5 0
71-mL         density=gram/mass
-55mL                     =86g/16mL
=16m-L                   =5.38g/mL
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4 years ago
I have a problem with solving this type of chemistry problem. Please Help!
Mashutka [201]

Answer:

97.92 g

Explanation:

Download docx
5 0
3 years ago
. The products of the reaction are glycerol and a crude soap. The chemical formula of the soap is CH3(CH2)14COO - Na+ . Draw the
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Answer:

The line-angle structure is shown in the image below.

Explanation:

The line-angle formula is also known as the skeletal structure in which the carbon atoms are at the corners where the two lines showing bonds meet and also at the end of the limes.

Each carbon atom in these kind of structures are itself understood to be attached to the exact number of hydrogen atoms so that the octet of the carbon atoms is complete.

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The line-angle structure is shown in the image below.

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Answer:

0.000399316  g

Explanation:

We can start with the <u>molar fraction</u> for each isotope:

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Y + X = 1

So, we can put the molar fraction of ^2^2Na in terms of ^2^3Na, so:

Y=1-X

So, we will have the <u>molar fraction of each isotope</u>:

^2^2Na: X-1

^2^3Na: X

And the <u>atomic mass</u>:

^2^2Na: 21.9944

^2^3Na: 22.9898

If we multiply the molar mass by the each atomic mass of each isotope we will have:

22.9898*(X)~+~21.9944*(X-1)~=~22.9785

Now we can solve for "X" :

22.9898X~+~21.9944X~-21.9944~=~22.9785

44.9842X-21.9944~=~22.9785

44.9842X~=~22.9785~+~21.9944&#10;

44.9842X~=~44.9729&#10;

X~=~\frac{44.9729}{44.9842}

X~=~0.999749&#10;

The molar fraction of ^2^3Na is <u>0.999749</u>. Now we can calculate the molar fraction of ^2^2Na, so:

Y~=~1-0.999749~=~0.000251&#10;

Now, if we multiply the molar fraction by the mass we can find the <u>mass</u> of ^2^2Na, so:

mass~of~^2^2Na~=~1.5909~g*0.000251~=~0.000399316~&#10;g

The mass of ^2^2Na is 0.000399316  g

I hope it helps!

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4 years ago
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