If you were asked to describe metals and magnetism you could say. A. non–paired electrons spin in opposite directions in all metals, creating a magnetic field. B. metals are magnets because they have more electrons than non–magnetic materials. C. metals can become magnetic if they have many spinning electrons that create magnetic fields. D. the electrons in some metals pair up to create a magnetic field.
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Answer : Option D) the electrons in some metals pair up to create a magnetic field.
Explanation : Most of the metalsare magnetic in nature including some exceptions. When the unpaired electrons get aligned with the magnetic field they posses magnetism. Also there are some paired electrons in metals which align themselves according to the magnetic field and create magnetism in them.
The correct answer is C; Metals can become magnetic if they have many spinning electrons that create magnetic fields.
Further Explanation;
As long as there are many spinning electrons anything metal will become magnetic. Ferromagnetic is when there are only some certain types of metals that are attracted to magnetic. If you were to make an electromagnet, you would only need to take an insulated wire and wrap it around the metal that has ferromagnetic properties.
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i take chemistry rn lol
3.2 x 10-15 ug
b 3.2 x 1015 ug
С
3.2 x 10-3 ug
d
3.2 x 10'ug
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Answer:
The options are not really clear, however, the answer is 3.2 × 10^3ug
Explanation:
Milligram (mg) and microgram (ug) are interconvertible measurements of mass or weight. One microgram (ug) is a millionth gram while one milligram (mg) is a thousandth gram.
Hence, one milligram is a thousandth microgram i.e. 1 mg = 1000 ug
Therefore, a measurement of 3.2mg in ug will be; 3.2 × 1000
= 3200
= 3.2 × 10^3 ug
Hence, an equivalent measurement of 3.2mg is 3.2 × 10^3ug.
The equivalent of 3.2 mg is 3.2 x 10^-3 ug. Therefore, the correct answer is option c.
3.2 mg stands for 3.2 milligrams.
The prefix "milli-" means one-thousandth (1/1000), so 1 milligram (mg) is equal to 0.001 grams (g).
To convert milligrams (mg) to micrograms (ug), we use the following conversion factor:
1 mg = 1000 ug
So, for 3.2 mg:
3.2 mg * 1000 ug/mg = 3200 ug
Now, to express this in scientific notation, we can write it as:
3200 ug = 3.2 x 10^3 ug
So, the correct equivalent of 3.2 mg is indeed:
c) 3.2 x 10^-3 ug
therefore, The correct answer is option c.
Learn more about Unit Conversion here:
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Answer: a contest in which you are eliminated if you fail to spell a word correctly.
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Answer:
Explanation:
Alpha decay: In this process, alpha particles is emitted when a heavier nuclei decays into lighter nuclei. The alpha particle released has a charge of +2 units.
The general alpha decay reaction is given as:
According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.
Thus the balanced reaction is :
the second equation the 218 will drop to 214 and the 84 to 82 leaving us with Pb-214
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