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3 years ago

Describe the importance of the nervous system:

2 answers:

7 0

The nervous system helps all parts of the body communicate with each other. It reacts to changes both on the outside and the inside of the body. It controls our brains, growth, and development etc.

elena-14-01-66 [18.8K]3 years ago

3 0

Answer:

So you can feel the things outside of your body

Explanation:

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What will occur when the trough of Wave A overlaps the crest of Wave B?

JulsSmile [24]

Answer:

Destructive interference will occur, causing the new wave to have less energy than Wave A or Wave B.

Explanation:

Destructive interference has lesser intensity.

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2 years ago

Read 2 more answers

When 2-phenylacetaldehyde is added dropwise to benzaldehyde in the presence of sodium hydroxide they undergo a crossed aldol rea

egoroff_w [7]

Carbonyl Compounds containing alpha proton readily donates alpha acidic proton when treated with strong Base. In given statement <span>2-phenylacetaldehyde is converted into Enolate and Enolates acts as a nucleophile and attacks carbonyl group of Benzaldehyde. The mechanism of given reaction is as follow, the movement of electrons is shown by RED arrows,</span>

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3 years ago

How many millimeters of 5 M NaCl are required to prepare 1500 mL of 0.002 M NaCl?

timurjin [86]

Answer:

The correct answer is 0.6 mL.

Explanation:

We use the mathematical expression:

Ci x Vi = Cf x Vf

Where Ci is the initial concentration (5 M); Cf and Vf refers to final concentration (0.002 M) and final volume (1500 mL). With the given data, we calculate the initial volume (Vi):

Vi = (Cf x Vf)/Ci = (0.002 M x 1500 mL)/(5 M) = 0.6 mL

Therefore, we need 0.6 mL of 5 M NaCl to prepare the solution with the requested dilution.

3 0

3 years ago

Molten zinc chloride can be electrolysed.

Crank

Answer: The products of electrolysis are Zn(l) and $Cl_2$ gas

Explanation:

Electrolysis of a subastance is breaking it into its constituents by the action of electrical current.

In the electrolysis of molten zinc chloride, zinc metal is produced at the cathode which is a negative electrode and chlorine gas produces as the anode which is a positive electrode.

$ZnCl_2(l)\rightarrow Zn^{2+}+2Cl^-$

At anode : $2Cl^-(l)\rightarrow 2e^-+Cl_2(g)$

At cathode : $Zn^{2+}(l)+2e^-\rightarrow Zn(l)$

5 0

3 years ago

¿Que significa que los metales sean dúctiles y maleables?

Novosadov [1.4K]

Answer:

ambas son una propiedad similar, pero el metal maleable puede batirse y extenderse en láminas o planchas delgadas, mientras que el metal dúctil, permite obtener hilos o sobres de diferentes grosores.

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3 years ago