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Alexandra [31]
3 years ago
12

The current day periodic table is organized by

Chemistry
2 answers:
Elanso [62]3 years ago
8 0

Answer:

Dmitri Mendeleev

Explanation:

Dmitri Mendeleev published the first recognizable periodic table in 1869, developed mainly to illustrate periodic trends of the then-known elements. He also predicted some properties of unidentified elements that were expected to fill gaps within the table. Most of his forecasts proved to be correct

Sergeeva-Olga [200]3 years ago
6 0

Answer:

Mendeleev periodic table

Explanation:

In 1869, just five years after John Newlands put forward his

Law of Octaves, a Russian chemist called Dmitri Mendeleev

published a periodic table. Mendeleev also arranged the

elements known at the time in order of relative atomic mass

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Using the following equation for the combustion of octane calculate the heat associated with the formation of 100.0 g of carbon
natali 33 [55]

Answer:

The right solution is "-602.69 KJ heat".

Explanation:

According to the question,

The 100.0 g of carbon dioxide:

= \frac{100.0 \ g}{114.33\  g/mole}

= 0.8747 \ moles

We know that 16 moles of CO_2 formation associates with -11018 kJ of heat, then

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= -0.0547\times 11018

= -602.69 \ KJ \ heat

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The corrects answer is 259 K
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How is energy related to the change of state represented by the model?
Cerrena [4.2K]

Answer:

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2 years ago
A 75.0-milliliter lightbulb is filled with neon, Theie are 7.16 10 4 moles ol gas In it, and the absolute pressure Is 116.8
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