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Jet001 [13]
3 years ago
7

Could y’all do this for me please !

Chemistry
2 answers:
Nesterboy [21]3 years ago
8 0

Answer:

cant see

Explanation:

Ilya [14]3 years ago
4 0

Answer:

first second and last is mechanical while third and fourth is chemical

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Epsom salt is commonly purchased in the pharmacy for a variety of uses, anti-inflammatory, laxative, and cosmetic. epsom salt is
Dominik [7]
Epsom salt is MgSO4.
We assume x water of hydration in the crystalline form.

Molecular mass of MgSO4 = 24+32+4*16=120
Molecular mass of MgSO4.xH2O = 120+18x

By proportion, 
2.000/0.977 = (120+18x)/120
Cross multiply
0.977(120+18x) = 120*2.000
from which we solve for x
17.586x+117.24 = 240
x=122.78/17.586
=6.980

Answer: there are 7 water of hydration in Epsom salt, according to the experiment.

Note: more accurate (proper) results may be obtained by using exact values (3-4 significant figures) in the molecular masses.  However, since water of hydration is the nearest integer, using approximate values (to at least two significant figures) suffice.
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3 years ago
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Nat2105 [25]

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6 0
3 years ago
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If dr. john sutherland is correct, which of the following was necessary for inert carbon atoms to become part of the chemistry o
arlik [135]
It seems that you have missed the necessary options for us to answer this question so I had to look for it. But anyway, here is the answer. If Dr. John Sutherland is correct, the one that was necessary <span> for inert carbon atoms to become part of the chemistry of earth is CYANIDE. Hope this helps.</span>
8 0
4 years ago
Does not react with aqueous solution of bromine <br> (a)C2H6<br> (b)C2H4<br> (c)C2H2<br> (d)C3H6
Damm [24]

Answer:

Hi, there!

which does not react with aqueous solution of bromine?

<em>c)C2H2</em>

<em />

<em>xXxAnimexXx</em>

<em>Happy Labor day! :)</em>

3 0
3 years ago
What element has 7 valence electrons and 4 electron shells
Dmitry [639]

Answer:

Mn

Explanation: 4th shell so 4th row and count 7 from the left most column

4 0
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