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3 years ago

Who made the first periodic table of the element

Chemistry

2 answers:

Vadim26 [7]3 years ago

5 0

Answer:

Her name is Dmitri Mendeleev

Marianna [84]3 years ago

5 0

Dmitri Mendeleev.

So basically there was earth fire water and air,

And the 4 elements were chilling,

But on Feb 17, 1869. This russian dude was like,

NOPE there like 1 million elements actually

So yea, hope this helps lol

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3 years ago

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romanna [79]

Answer:

Saturn

Explanation:

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3 years ago

Strontium combines with bromine to form strontium bromide.What happens to the electrons in the outer levels when strontium atoms

Nataly [62]

Answer:

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Explanation:

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3 years ago

Describe two different causes of the force of attraction in a chemical bond

gregori [183]

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3 years ago

An organic acid is dissolved in methylene chloride (d=1.3 g/mL), which is then extracted with aqueous NaOH (d=1.0 g/mL). Will th

jenyasd209 [6]

Hey there!

Organic acid present in the methylene chloride when treated with aqueous NaOH it will be converted to aqueous soluble sodium carboxylate salt as shown below :

RCOOH (DCM layer) + NaOH ----------------> RCOONa (aqueous layer) + H₂O

the organic layer methylene chloride is immiscible with water, therefore it will present as two-layer, the large denser layer will present at the bottom

Density of dichloromethane = 1.325 g/mL

Density of water = 1 g/mL

Since dichloromethane density is more it will present at the bottom and water density is lesser, therefore, it will present its top, since RCOONa is aqueous soluble it present at the top aqueous layer

*Organic acid will present in the top layer

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3 years ago