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lbvjy [14]
3 years ago
11

What was Johann Dobereiner’s contribution to the development of the periodic table?

Chemistry
2 answers:
Novay_Z [31]3 years ago
5 0

He identified triads of elements that had similar properties

umka21 [38]3 years ago
3 0
<span>he introduced his law of triads. each triad was a group of three elements</span>
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A 400 ml sample of gas is heated from -20 c to 60
Viktor [21]
Using p1v1/t1=p2v2/t2
p1=50
p2=225
v1=400ml
v2=?
t1=-20=253k
t2=60=333k
50x400/253=225xv2/333
7.9=0.7xv2
v2=7.9/0.7
v2=11.3ml
6 0
3 years ago
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In neutralization reaction _______ and ________ is produced.
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Answer:

In neutralization reaction water and a salt is produced.

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2 years ago
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Wha is boiling point<br>​
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3 years ago
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vredina [299]

The formula of the given compounds are as follows:

a. copper (II) phosphate : Cu₃(PO₄)₂

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c. potassium sulfite : K₂SO₃

d. strontium nitride : Sr₃N₂

e. nitrous acid : HNO₂

<h3>What is the formula of a compound?</h3>

The formula of a compound represents the compound using the symbol of the component elements in the compound showing the ratio in which the atoms of the elements combine in the compound.

The formula of the given compounds are as follows:

a. copper (II) phosphate : Cu₃(PO₄)₂

b. phosphorus trichloride : PCl₃

c. potassium sulfite : K₂SO₃

d. strontium nitride : Sr₃N₂

e. nitrous acid : HNO₂

In conclusion, the formula of a compound represents the compound with symbols.

Learn more about formula of compound at: brainly.com/question/13522594

#SPJ1

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I believe that answer is D
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