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nevsk [136]
3 years ago
15

Which of the following materials would you wrap wire around to make an electromagnet?

Chemistry
2 answers:
swat323 years ago
7 0

Answer: The correct answer is "iron nail".

Explanation:

Electromagnet consists of iron core wounded by the coils and then the current is passed through it.

The electromagnet becomes active when the current flows through it.

It loses its magnetism when the power is switched off. Therefore, it is a temporary magnet.

Iron nail becomes magnetized easily when the current flows through it. It is a ferromagnetic material.

Iron nail is used in the electromagnet as it loses its magnetism when the current stops flowing through it.

From the given options in the problem, the iron nail is wrapped by using wire around it to make an electromagnet.

ElenaW [278]3 years ago
6 0
You would wrap the Wire round the nails because if they are magnetic they will make their own magnetic field which makes electricity so that would create an electromagnet. hope this helps ^-^ so A!

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What's the amount of solute in 1.75 L of 0.25 M HCl?
Fynjy0 [20]

Answer: 0.4375 mols of solute

Explanation:

The problem is asking for the amount of solute. We are given the value of molarity. The molarity is 0.25M. We know that molarity is M=\frac{mols of solute}{liters of solution}. Since we are given the liters of solution is 1.75, we can use those values to solve for mols of solute.

0.25M=\frac{x}{1.75L}                        [multiply both sides by 1.75 L]

x=0.4375 mols

There are 0.4375 mols of solute.

5 0
4 years ago
Give the name of HI as an acid and as a binary compound
Flura [38]

Answer:

HI is a diatomic molecular compound known as hydrogen iodide or hydroiodic acid. It is a strong acid.

8 0
3 years ago
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Leno4ka [110]

Answer:

<h3>MASS AND VOLUME</h3>

Explanation:

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5 0
3 years ago
There is a bell at the top of a tower that is 45m high. The bell weighs 190N (N=Newtons). The bell has potential energy. The for
fiasKO [112]

Since the bell weighs 190 N and is 45 m high, the bell’s potential energy is 8550 J

To answer the question, we need to know what potential energy is.

<h3>What is potential energy?</h3>

This is energy due to position. It is given by PE = mgh where

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Also, W = mg = weight of object.

So, PE = Wh

<h3>The bell's potential energy</h3>

Now, given that the bells weight 190 N and is 45 m high,

  • W = 190 N and
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So, PE = Wh

= 190 N × 45 m

= 8550 Nm

= 8550 J

So, the bell’s potential energy is 8550 J

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5 0
2 years ago
KOH + HBr - KBr + H2O<br> Which is the acid in this reaction?
Reptile [31]

Answer:

HBr is a strong acid

Explanation:

KBr is a salt which makes a base . also KOH is a base

7 0
3 years ago
Read 2 more answers
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