How are a bar magnet and a electromagnet different

2 answers:

7 0

An electromagnet is made from a coil of wire which acts as a magnet when an electric current passes through it. Often an electromagnet is wrapped around a core of ferromagnetic material like steel, which enhances the magnetic field produced by a coil.

quester [9]3 years ago

6 0

An electromagnet acquires magnetism through electricity.
A bar magnet comes with magnetism already stored within it and doesn't need to rely on on another object for power.

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Which of the following pairs of elements is most likely to form an ionic bond? Sulfur and Oxygen Carbon and Chlorine Phosphorous

djverab [1.8K]

“<u>Aluminum</u>” and “<u>Nitrogen</u>” form an ionic bond.

Option: D

<u>Explanation</u>:

Aluminum and nitrogen are most likely to form an “ionic bond” among given pairs of elements in form of aluminum nitride. AlN is partially covalent and also show ionic characteristics as N needs 3 electrons to fill outer shell and Al has 3 electrons in valence shell. Hence $\mathrm{Al}^{+3}$ is cation and $\mathrm{N}^{-3}$ is anion and have “electrostatic force” of attraction between these oppositely charged ions. Here ionic behavior is seen as nitrogen is more “electronegative” hence attract the shared pair of electrons which is earlier responsible for partial covalent bond formation.

8 0

3 years ago

According to the following equation:

Volgvan

2H2 + O2 → 2H2O
2 mol. → 2×(1×2+16)
1 mol. → x
$x = \frac{36 \times 1}{2 } = 18 \: g \: \: of \: h2o$

6 0

3 years ago

HNO3 + Mg(OH)2 yield Mg(NO3)2 + H2O

Minchanka [31]

Answer:

yes

Explanation:

because this is a neutralization reaction that yield salt and water

8 0

3 years ago

Please indicate which of the compounds will yield postive results for the permanganate, ninhydrin, and ceric ammonium nitrate te

maks197457 [2]

The compounds will yield Positive results for the permanganate, ninhydrin, and ceric ammonium nitrate tests are

permanganate test= ethene,

ninhydrin=aspasyic acid Phenylalanine

ceric ammonium nitrate test= methanol

<h3>What is a compound?</h3>

Generally, A compound is simply defined as a substance made up of two or more different chemical elements held together by chemical bonds that are difficult to break.

In conclusion, For the permanganate test= ethene,

ninhydrin=aspasyic acid Phenylalanine

ceric ammonium nitrate test= methanol