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irina1246 [14]
3 years ago
6

When using the scientific method which step comes last

Chemistry
1 answer:
MA_775_DIABLO [31]3 years ago
6 0

Answer:

proposing a hypothesis.

Explanation: Therefore the last step in the scientific method is proposing a hypothesis or obtaining a conclusion.

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The gold-foil experiment was used to discover which subatomic particle? Question 2 options: electrons protons ==> neutrons (m
Gelneren [198K]
Proton, the gold foil experiment indicated that the nucleus has a positive charge.
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3 years ago
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K for enolization of 2,4-cyclohexadienone is about 1013. Explain why the enol is so much more stable than the keto tautomer.
torisob [31]

Answer:

Because the value of K is huge.

Explanation:

The tautomer is a kind of isomer in which exist an equilibrium between a ketone and an enol, or between an aldehyde and an enol. So, in the enolization, the ketone is the reactant and the enol is the product.

The equilibrium reaction can be characterized by an equilibrium constant, which is the ratio of the concentration of the products by the concentration of the reactants.

Because the constant K is extremely large (10¹³) we can conclude that the concentration of the product will be greater than the concentration of the reactant, in the equilibrium. It means that the concentration of the enol will be greater.

So, the ketone is unstable and forms in a great amount the more stable product, the enol.

4 0
3 years ago
When aqueous solutions of potassium fluoride and hydrochloric acid are mixed, an aqueous solution of potassium chloride and hydr
Semmy [17]

Answer:

K⁺ (aq)  +  F⁻ (aq)  +  H⁺ (aq)  +  Cl⁻ (aq)  → KCl (aq) + H⁺ (aq)  +  F⁻ (aq)

Explanation:

KF (aq) +  HCl (aq) →  KCl (aq)  + HF (aq)

KF (aq) → K⁺ (aq) +  F⁻ (aq)

HCl (aq) →  H⁺ (aq)  +  Cl⁻ (aq)

KCl (aq) → K⁺ (aq) +  Cl⁻ (aq)

HF (aq) →  H⁺ (aq)  +  F⁻ (aq)

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3 years ago
Please draw the resonance structure for this compound indicating formal charges and lone pairs
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Here are the resonance contributors I found.

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3 years ago
Explain how you would find the mass percent<br> of each element in water.
nydimaria [60]

Answer:

finding the mass percentage oven element in a compound might sound complicated, but the calculation is simple. For example, to determine the mass percentage of hydrogen in water H2O, divide the major mass of hydrogen by the total molar mass of water and then multiply the result by 100

3 0
3 years ago
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