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shepuryov [24]
3 years ago
12

Arrange the metallic elements in order of increasing reactivity. Use the periodic table to identify their positions on the table

. Drag each tile to the correct box.

Chemistry
2 answers:
7nadin3 [17]3 years ago
7 0

Answer:

Magnesium>Calcium>Potassium>rubidium

Explanation:

USPshnik [31]3 years ago
7 0

Answer:

Magnesium, Calcium, Potassium, Rubidium

Explanation:

for plato users :)

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Kryger [21]

The empirical formula : C₁₂H₄F₇

The molecular formula : C₂₄H₈F₁₄

<h3>Further explanation</h3>

mol C (MW=12 g/mol)

\tt \dfrac{18.24}{12}=1.52

mol H(MW=1 g/mol) :

\tt \dfrac{0.51}{1}=0.51

mol F(MW=19 g/mol)

\tt \dfrac{16.91}{19}=0.89

mol ratio of C : H : O =1.52 : 0.51 : 0.89=3 : 1 : 1.75=12 : 4 : 7

Empirical formula : C₁₂H₄F₇

(Empirical formula)n=molecular formula

( C₁₂H₄F₇)n=562 g/mol

(12.12+4.1+7.19)n=562

(281)n=562⇒ n =2

Molecular formula : C₂₄H₈F₁₄

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The atomic mass is 64.07
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