How does repeatability have an affect on scientific research?

1 answer:

7 0

A. is the answer, because the more an experiment is repeated, it will become apparent if it yields the same results thus confirming or debunking the hypothesis.

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Consider this equilibrium constant expression: K= (H2S)(OH-)/(HS-) What does this expression represent?

ella [17]

Products over reactants:

<span>HS- + H2O ----> H2S + OH-

</span><span>The expression represents Kb for HS–</span>

3 0

3 years ago

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Molecular energies can be expressed as the sum of 4 components: translational, rotational, vibrational, and electronic. Let thes

VikaD [51]

Answer:

The general form of a partition function is a sum over the states of the system,

Explanation:

qTr + qRo+ qVi +qEl= Qt

Qt= total energy

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3 years ago

How is an endothermic reaction identified?

Naily [24]

Answer:

Endothermic is identified if the process requires heat as a reactant, since endothermic means "intake of heat", so it has to take in some type of heat.

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3 years ago

If an object is red, what type of light is being absorbed by the material?

12345 [234]

All colors but red is being absorbed by the material.

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3 years ago

Claim The student hopes the samples are gold, which has a density of 19.3 g/cm3 . A local geologist suggested that samples might

spin [16.1K]

Answer:

Pyrite.

Explanation:

In this case, for the given samples, we compute the densities considering that the volume of each sample is computed by the difference between the volume of the water + sample and the volume of water:

$\rho_1=\frac{50.25g}{(60.3-50.1)mL}=4.92g/mL\\ \\\rho_2=\frac{63.56g}{(62.5-49.8)mL}=5.01g/mL\\\\\rho_3=\frac{g}{(61.5-50.2)mL}=5.10g/mL\\\\\rho_4=\frac{55.35g}{(56.7-45.6)mL}=4.99g/mL\\\\\rho_5=\frac{74.92g}{(65.3-50.3)mL}=4.99g/mL\\\\\rho_6=\frac{67.78g}{(60.8-47.5)mL}=5.10g/mL$

Therefore, since the density of the samples are closer to the density of pyrite (5.01 g/cm³) we conclude that the samples are more like to be pyrite.

Best regards.

8 0

3 years ago