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serg [7]
3 years ago
10

Which of the following is a use of microwaves?

Chemistry
1 answer:
atroni [7]3 years ago
3 0
Communications(letter C)
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Alchemists in the Middle Ages dreamed of converting base metals, such as lead, into precious metals—gold and silver. Why could t
lesantik [10]

Explanation:

Each element in the periodic table has different but fixed number of the protons in nucleus of it's atom, which is known as the atomic number.

Transmutation of one chemical element into the another involves the changing of the atomic number. Such nuclear reaction requires millions of the times more energy as compared to normal chemical reactions. Thus, the dream of  the alchemist of transmuting the lead into the gold was never achievable chemically .

Conversion of lead to gold in today's world:

This conversion is indeed possible. The requirements are a particle accelerator, tremendous supply of the energy. Nuclear scientists at the Lawrence Berkeley National Laboratory located in California, more than 30 years ago, succeeded in producing very minute amounts of the gold from the bismuth. Bismuth is a metallic element which is adjacent to the lead on periodic table. Same process would work for the lead but isolating gold at end of reaction would prove much more difficult because lead is available in many isotopes. The homogeneous nature of the element means that it is easier to separate the gold from the bismuth as compared to separate the gold from the lead which has four  isotopic identities which all are stable.

4 0
3 years ago
In a chemical reaction, water decomposes to form hydrogen and oxygen. What is the correct term for the water?
gulaghasi [49]
The answer is: [D]: a reactant.
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3 years ago
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. A dough that is high in fat and sugar, and sometimes eggs.
murzikaleks [220]

Answer:

LEAN DOUGHS

Explanation:

A lean dough is a dough low in fat and sugar. Hard crust breads and rolls such as French and Italian breads and pizza crusts. Other white and whole wheat breads and dinner rolls. These are higher in fat and sugar and sometimes contain eggs and milk solids, because they are richer, they have a softer crust.

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3 years ago
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515282 quarts into milliliters. I
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Answer:

487638640,7819

dndndnndndbxbdbdbdbdb

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Medicationswith names ending in ER,CR,XR,and SR indicate they are __ medications a: extended or controlled release b: oral c: ch
DanielleElmas [232]

Answer: a: extended or controlled release

Explanation:

7 0
2 years ago
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