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2 years ago

If a bar magnet's neutral region is broken into tow, what will mist likely occur

2 answers:

7 0

<span>The answer is C. The north post of one magnet pulls in the south shaft of a moment magnet, while the north shaft of one magnet repulses the other magnet's north shaft. So we have the normal saying: like shafts repulse, dissimilar to posts draw in. A magnet makes an undetectable region of attraction surrounding it called an attractive field.</span>

Korolek [52]2 years ago

7 0

Assuming that the division of the magnet was gentle in nature, so as to not disturb the alignment of the domains, the answer is B. each of the two segments of the original bar magnet will have a north and a south pole<span>. This is due to the fact that a magnet is essentially filled with bundles of magnetic domains, each having its north pole facing towards the magnet's north pole and its south pole facing the magnet's south pole. Therefore, cutting gently will only expose the poles from the middle of the magnet.</span>

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if an iron nail is placed in a glass of water the nail will sink. Is the density of iron smaller than or larger than the density

Gala2k [10]

It has more density when it sinks because the water pushes away thats why people float they are less dense

5 0

2 years ago

The monovalent salt concentration (the predominant solute in the blood cell) for a sample of red blood cells is 0.13 moles/liter

11111nata11111 [884]

Answer:

The osmotic pressure of cell is $648.3$ KPa

Explanation:

As we know the osmotic pressure is equal to

$\pi = icRT$

Where

i is the Van Hoff factor

c is the concentration of solution

R is the ideal gas constant

and T is the temperature.

Substituting the given values, we get -

$\pi = 2 * 0.13 * 0.08206 * 300\\$

$\pi = 648.3$ KPa

4 0

2 years ago

Question 1 of 10

Stolb23 [73]

Answer:

C. The conclusions tell why the data support or reject the hypothesis.

8 0

3 years ago

HeLlo, HeLp Me PleAsE, Ill MaRk YoU BrAiNlIeSt !

evablogger [386]

<h2>Hey There!</h2><h2>_____________________________________</h2><h2>Answer:</h2>

$\huge\boxed{Option C}$

<h2>_____________________________________</h2><h2>CALORIMETER:</h2>

Calorimeter is device used for the measurement of heat. In a calorimeter we can use the temperature change of water to quantify an amount of heat. A calorimeter just captures all the energy released (or absorbed) by a reaction in the water. So Option A and B are wrong as calorimeter don't have anything to do with providing the heat or letting the the heat in, as it is the insulated calorimeter too.

<h2>_____________________________________</h2><h2>Energy in the reaction:</h2>

In the formation of any bond there is equal amount of heat required as to break that bond. It means Energy released in the making of bond is equal to the energy required in the breaking of the bond. So Option D is wrong as it says we need more energy in making then breaking.

<h2>_____________________________________</h2><h2>Enthalpy:</h2>

Enthalpy is the total heat content of the system. As we provide energy to the reactants and the product is formed, so The enthalpy(heat content) of product is more than the Enthalpy of the reactant, Thus Option C is correct.

Enthalpy is denoted by H or Q, its formula is,

H = U + PV

Where,

U is internal energy

PV is equals to Work done ; P = Pressure, V = Volume

<h2>_____________________________________</h2><h2>Best Regards,</h2><h2>'Borz'</h2><h2> </h2>

5 0

2 years ago

Draw the structures of the aldol addition and condensation products of 3‑methylbutanal

Leona [35]

Aldol condensation involves two aldehydes or two ketones or an aldehyde and a ketone. The product of the reaction is shown in the image attached.

<h3>What is Aldol condensation?</h3>

Aldol condensation is a reaction that involves two aldehydes or two ketones or an aldehyde and a ketone. This reaction occurs at the carbonyl group as one of the carbonyl compounds is in the enolate form.

The product of the reaction is shown in the image attached. This gives the mechanism for the Aldol condensation of the compound 3‑methylbutanal.

Learn more about aldol condensation: brainly.com/question/9415260

6 0

2 years ago