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Alex17521 [72]
2 years ago
8

Determine which is the control group and which is the experimental group in the following scenario ( Scientists are testing a ne

w kind of aspirin to see whether it will relieve headaches. They give one group of volunteers the aspirin. They give another group of volunteers pills that look like aspirin but are actually sugar pills)
Answer this and you will get brainiest WITH NO VIRUS LINKS OR REPORT YOU
Chemistry
2 answers:
quester [9]2 years ago
7 0
The group that were given sugar pills
Daniel [21]2 years ago
3 0

Answer:

The group given the sugar pills.

Explanation:

The control group is the ones given sugar pills because they did not get the experimental aspirin

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For the reaction 2ch4(g)⇌c2h2(g)+3h2(g) k = 0.135 at 1615 ∘c . what is kp for the reaction at this temperature?
alexgriva [62]
We can get Kp value from this formula:
Kp = Kc(RT)^Δn
when Kc= 0.135 
and R = 0.08206 L.atm/mol.K
and Δn = total number of moles of products - total number of moles of reactants
             = 1+3-2 = 2 
T= tempreature in kelvin = 1615 °C+273 =1888 K
so by substitution:

∴ Kp = 0.135 * (0.08206 * 1888)^2
         = 3240.4  
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3 years ago
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ikadub [295]
Since cells are hard to see the microscope helped them see. scientist were able to actually see cells in tissues placed under the microscope.
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2 years ago
Complete the equation for the combustion of wood (assume carbon is the combustible material)
Sonbull [250]
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3 years ago
Is it possible for a diprotic acid to have Ka1?
Masja [62]

Answer:

Yes, it is possible.

Explanation:

A diprotic acid is an acid that can release two protons. That's why it is called diprotic.

Monoprotic → Release one proton, for example Formic acid HCOOH

Triprotic → Releases three protons, for example H₃PO₄

Polyprotic → Release many protons, for example EDTA

it is a weak acid.

In the first equilibrum, it release proton, and the second is released in the second equilibrium. So the first equilibrium will have a Ka1

H₂A  +  H₂O  ⇄  H₃O⁺  +  HA⁻                Ka₁

HA⁻  +  H₂O  ⇄  H₃O⁺  +  A⁻²               Ka₂

The HA⁻ will work as an amphoterous because, it can be a base or an acid, according to this:

HA⁻   +  H₂O  ⇄  H₃O⁺   + A⁻²      Ka₂

HA⁻   +  H₂O  ⇄  OH⁻   + H₂A       Kb₂

4 0
3 years ago
Pleasee help me I really need an answer help
Juliette [100K]

Answer:

This is hard for me also but I am trying to find out answer

Explanation:

Please mark me as brainlist.

6 0
3 years ago
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