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iVinArrow [24]
3 years ago
5

Who made the periodic table

Chemistry
2 answers:
TEA [102]3 years ago
8 0

Answer:

Dmitri Mendeleev

Explanation:

idk

Vlada [557]3 years ago
7 0

Answer:

Dmitri Mendeleev

Most people think Mendeleev invented the modern periodic table. Dmitri Mendeleev presented his periodic table of the elements based on increasing atomic weight on March 6, 1869, in a presentation to the Russian Chemical Society

Explanation:

comment how it helps

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Heat transfer between two substances is affected by specific heat and the chemical composition of the substances. state of matte
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the answer is D

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Predict what the Co, levels will be when you are "old". How many plants/trees need to be planted now to keep carbon dioxide in t
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A lot of them.

Explanation:

It would take hundreds of thousands of trees to clear all of the emmisions.

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Air is composed of nitrogen oxygen and based on that information air can be described as
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Answer:

Air can be described as:  Mass and Mixture of Gases

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3 years ago
If an atom has a mass number of 23, which of the following is always true?
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Atomic number is less than 11
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3 years ago
A sample of nitrogen gas had a volume of 500. mL, a pressure in its closed container of 740 torr, and a temperature of 25 °C. Wh
iren2701 [21]

Answer:  Thus the new volume of the gas is 530  ml

Explanation:

Combined gas law is the combination of Boyle's law, Charles's law and Gay-Lussac's law.

The combined gas equation is,

\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}

where,

P_1 = initial pressure of gas =  740 torr

P_2 = final pressure of gas = 760 torr

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V_2 = final volume of gas = ?

T_1 = initial temperature of gas = 25^oC=273+25=298K

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Now put all the given values in the above equation, we get:

\frac{740\times 500}{298}=\frac{760\times V_2}{323}

V_2=530ml

Thus the new volume of the gas is 530 ml

6 0
3 years ago
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