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guapka [62]
2 years ago
11

What defines the mass number of an isotope?

Chemistry
2 answers:
Kisachek [45]2 years ago
6 0

Answer:

A

Explanation:

geniusboy [140]2 years ago
4 0

Answer:

a

Explanation:

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Which of the following is accurate in describing the placement and classification of iodine?
fenix001 [56]
You can answer this question by only searching the element in the periodic table.

The atomic number of iodine, I, is 53. It is placed in the column 17 (this is the Group) and row 5 (this is the Period).

The conclusion is that the iodine is located in Period 5, Group 17, and is classified as a nonmetal.
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3 years ago
The first chemists, philosophers like, Aristotle were from which country?
qwelly [4]

Answer:

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Explanation:

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The first method of determining the chemical composition of substances in space was to
ehidna [41]
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What type of relationship does temperature and pressure have?
blsea [12.9K]
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by making P the subject of the formula, P= nRT/V

<span>This implies that Pressure is directly proportional to temperature, OR, as pressure increases, temperature will increase proportionally.</span>
5 0
3 years ago
Describe the contributions made by the following scientists to the development of the periodic table.
Basile [38]

Answer:

B

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dimitri Mendeleev......

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