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RUDIKE [14]
2 years ago
13

Who arranged the elements according to atomic mass, and used the arrangement to predict the properties of missing elements.

Chemistry
2 answers:
Karolina [17]2 years ago
6 0

Answer:

i think it's C

Explanation:

But if it's wrong,im so sorry

Verdich [7]2 years ago
5 0

Answer:

C.

Explanation:

the answer is C dmitri mendeleev

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4 0
2 years ago
2. Calculate the mass of 3.47x1023 gold atoms.
lapo4ka [179]

3.47 x 10^{23} atoms of gold have mass of 113.44 grams.

Explanation:

Data given:

number of atoms of gold = 3.47 x 10^{23}

mass of the gold in given number of atoms = ?

atomic mass of gold =196.96 grams/mole

Avagadro's number = 6.022 X 10^{23}

from the relation,

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so no of moles of gold given = \frac{3.47 X 10^{23}  }{6.022 X 10^{23} }

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3 years ago
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