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BartSMP [9]
3 years ago
7

An atom that has 84 protons and 86 neutrons undergoes a reaction. At the end of the reaction, it has 82 protons and 84

Chemistry
2 answers:
andre [41]3 years ago
8 0

Answer:

I think its A. It accepted radiation in a chemical reaction, hope this helped.

larisa86 [58]3 years ago
6 0

Answer:

D

Explanation:

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Where are people mostly exposed to chemicals?
Vlad [161]

Answer:

people are mostly exposed to chemicals through their nose, mouth, eyes, and ears

Explanation:

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4 0
3 years ago
Calculate the average atomic mass of sulfur if 95.00% of all sulfur atoms have a mass of 31.972 amu, 0.76% has a mass of 32.971
Nadusha1986 [10]

Answer:

32.057 amu

Explanation:

\text{Average atomic mass = Mass}\times \text{abundances}

M=95\%\ \text{of}\ 31.972 +0.76\%\ \text{of}\ 32.971 +4.22\%\ \text{of}\ 33.967 \\\\M=\dfrac{95}{100}\times  31.972 +\dfrac{0.76}{100}\ \times \ 32.971 +\dfrac{4.22}{100} \times \ 33.967\\\\M=32.057\ \text{amu}

So, the average atomic mass of sulfur is 32.057 amu.

7 0
3 years ago
How did the development of the earliest idea about atoms differ from the later work of scientists?
gtnhenbr [62]

The correct answer is C. It was based on the thoughts of an early philosopher.

Explanation:

An atom is a basic and smallest unit that composes matter and that determine the properties of elements. Regarding the development of ideas related to atoms these did not begin in science but in philosophy; indeed the first person that proposed matter or elements were composed of certain smaller units was the philosophers Leucippus and his pupil Democritus in Ancient Greece, who stated atoms were eternal, infinite and defined the qualities of an object, idea that was supported by other Greek philosophers. But it was not until 16th and 17th centuries after the Middle Ages that the term re-emerged and until the 19th century it was officially proposed and there were experiments by scientists that later became a theory. Therefore, the development of the earliest idea about attoms differs from later work of scientists is that the earliest idea was based on the thoughts of an early philosopher.

4 0
3 years ago
Read 2 more answers
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