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Evgen [1.6K]
3 years ago
10

What does the periodic table have in common with a calendar?

Chemistry
1 answer:
Angelina_Jolie [31]3 years ago
5 0

Answer:

Calendar and periodic table both have repetitive patterns.

Explanation:

In calendar the days are arranged and divided into weeks whereas in the periodic table the elements are arranged in increasing atomic number and divided into groups

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What is the mass of 3.6 x 1024 atoms of Zinc (Zn)?
AlladinOne [14]
Answer is: mass od zinc is 392,28 g.
N(Zn) = 3,6·10²⁴.
n(Zn) = N(Zn) ÷ Na.
n(Zn) =  3,6·10²⁴ ÷ 6·10²³ 1/mol.
n(Zn) = 6 mol.
m(Zn) = n(Zn) · M(Zn).
m(Zn) = 6 mol · 65,38 g/mol.
m(Zn) = 392,28 g.
Na - Avogadro number.
n - amount of substance.
M - molar mass.
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Mg(OH)2 + 2HNO3 → Mg(NO3)2 + 2H20
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Answer:

A. 1350

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Need help ASAP !!
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it's a segment

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