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slavikrds [6]
3 years ago
5

Who is known as the "father of modern chemistry” because he first organized all known elements into four different groups? Johan

n Wolfgang Döbereiner Antoine Lavoisier Dmitri Mendeleev Henry Moseley
Chemistry
2 answers:
scoundrel [369]3 years ago
7 0

Answer  Henry Moseley

Sonja [21]3 years ago
6 0

Answer:

D

Explanation:

the answer is not D

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Write a complete set of quantum numbers for the fifth electron added to a hydrogen ion (i.e., the fifth electron in any electron
ankoles [38]
N=
l=
m(l)=
m(s)=

start with H^+ (no electrons) , then adding 5 electrons will be  1s2 2s2 2p1
so for the 5th electron 
n = 2
l = 1
ml = -1
ms = 1/2

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What problems may global warming cause?
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Explanation:

Global warming stresses ecosystems through temperature rises, water shortages, increased fire threats, drought, weed and pest invasions, intense storm damage and salt invasion, just to name a few.

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Which statement describes how heat is transferred by convection?
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7 0
3 years ago
a rock weighing 75.0g placed in a graduated cylinder displacing the volume from 31.4 ml to 36.5 ml what is density of the rock i
andrezito [222]
Answer:

<span>ρ≅13.0⋅g⋅m<span>L<span>−1</span></span></span> = <span>13.0⋅g⋅c<span>m<span>−3</span></span></span>

Explanation:

<span>Density=<span>MassPer unit Volume</span></span> = <span><span>75.0⋅g</span><span><span>(36.5−31.4)</span>⋅mL</span></span> <span>=??g⋅m<span>L<span>−1</span></span></span>

Note that <span>1⋅mL</span> = <span>1⋅c<span>m<span>−3</span></span></span>; these are equivalent units of volume; 
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7 0
3 years ago
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