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2 years ago

Select the correct scientist for each of the following advances in creating the modern periodic table.

Chemistry

2 answers:

netineya [11]2 years ago

4 0

Answer:

Lavoisie

newlands

moseley

Explanation: just did it on edge

sergey [27]2 years ago

3 0

Answer:

Lavoisier; Newlands; Moseley

Explanation:

In 1789, Antoine Lavoisier grouped the elements into gases, nonmetals, metals, and earths.

In 1865, John Newlands developed the Law of Octaves. He stated that "any given element will exhibit analogous behaviour to the eighth element following it in the table."

In 1914, Henry Moseley found a correlation between the X-ray wavelength of an element and its atomic number. He was then able to restructure the periodic table according to atomic numbers.

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maxonik [38]

Answer:

21.344%

Explanation:

For the given chemical reaction, 8 moles of the reactant should produce 4 moles of $Na_{2}O$ . However, 195 g of $Na_{2}O$ was produced instead. The molar mass of $Na_{2}O$ is 61.9789 g/mol.

Thus, the moles of $Na_{2}O$ produced = 195/61.9789 = 3.1462 moles

The percent error = [(Actual -Experiment)/Actual]*100%

The percent error = [(4.00 - 3.1462)/4.00]*100% = (0.85376/4.00)*100% = 21.344%

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rusak2 [61]

Answer:

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Explanation:

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