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Harman [31]
3 years ago
7

Why is salt no longer visible after the stirring?

Chemistry
2 answers:
Scorpion4ik [409]3 years ago
7 0

Salt is soluble in water.

labwork [276]3 years ago
4 0
<h2>its cause the salt has dissolved, and is not visible while in solution</h2>

hope that helps :)

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In a resonant hybrid of a molecule like CH3CO2-, how are the electron orbitals of the carbon in CO2 sp hybridized?
Burka [1]
<span>The carbon  sp2 is hybridized  in any cabozxylic acid oninon and it forms one simga bond with each oxygine and one sigma bond with carbon backbone.</span>
7 0
3 years ago
A solution is prepared by dissolving 10.0 g of NaBr and 10.0 g of Na2SO4 in water to make a 100.0 mL solution. This solution is
Colt1911 [192]

Answer:

M_{Na^+}=1.36M

M_{Br^-}=1.58M

Explanation:

Hello,

At first, it turns out convenient to compute the total moles of sodium that will be dissolved into the solution by considering the added amounts of sodium bromide and sodium sulfate:

n_{Na^+}=n_{Na^+,NaBr}+n_{Na^+,Na_2SO_4}\\n_{Na^+,NaBr}=10.0gNaBr*\frac{1molNaBr}{103gNaBr}*\frac{1molNa^+}{1molNaBr}=0.0971molNa^+\\n_{Na^+,Na_2SO_4}=10.0gNa_2SO_4*\frac{1molNa_2SO_4}{142gNa_2SO_4}*\frac{2molNa^+}{1molNa_2SO_4} =0.141molNa^+\\n_{Na^+}=0.0971molNa^++0.141molNa^+\\n_{Na^+}=0.238molNa^+

Once we've got the moles we compute the final volume via:

V=100.0mL+75.0mL=175.0mL*\frac{1L}{1000mL}=0.1750L

Thus, the molarity of the sodium atoms turn out into:

M_{Na^+}=\frac{0.238mol}{0.1750L} =1.36M

Now, we perform the same procedure but now for the bromide ions:

n_{Br^-}=n_{Br^-,NaBr}+n_{Br^-,AlBr_3}\\n_{Br^-,NaBr}=10.0gNaBr*\frac{1molNaBr}{103gNaBr}*\frac{1molBr^-}{1molNaBr}=0.0971molBr^-\\n_{Br^-,AlBr_3}=0.0750L*0.800\frac{molAlBr_3}{L} *\frac{3molBr^-}{1molAlBr_3}=0.180molBr^- \\n_{Br^-}=0.0971molBr^-+0.180molBr^-\\n_{Br^-}=0.277molBr^-

Finally, its molarity results:

M_{Br^-}=\frac{0.277molBr^-}{0.1750L}=1.58M

Best regards.

7 0
3 years ago
May yall help me i have been stuck long enough answer these
Citrus2011 [14]

Answer:

Frequency, Wavelength, Crest, amplitude, trough, sound waves, all of the above

Explanation:

7 0
3 years ago
Which monomer gives a greater yield of polymer, 5-hydroxypentanoic acid or 6-hydroxyhexanoic acid? Explain your choice.
LekaFEV [45]

Answer:

6-hydroxyhexanoic acid

Explanation:

5-hydroxypentanoic acid will form a 7 member group, while 6-hydroxyhexanoic acid will form a 6 member group.

In polymerization, polymers with 6 member groups are more stable than the ones with 7 member groups. This means that 6-hydroxyhexanoic acid will have a higher chance of polymerization, and therefore give a greater yield of polymers, than 5-hydroxypentanoic acid.

6 0
4 years ago
A mixture requires constant shaking to keep its constituents combined. It is best described as a _____. homogenous mixture collo
lyudmila [28]

The correct answer is a suspension.

A suspension is a mixture containing relatively large particles that settle fast

A homogenous mixture is a mixture where everything looks the same throughout and is all in the same phases

A colloid is a heterogenous mixture where the particles are small enough to stay suspended (usually talking about gaseous solutions)

And a solution is a homogenous mixture where the particles are too small to even reflect light

3 0
3 years ago
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