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OverLord2011 [107]

3 years ago

10

Who proposed a heliocentric model of the solar system

2 answers:

Mandarinka [93]3 years ago

7 0

Nicolaus copernicus !

alekssr [168]3 years ago

4 0

<span>This theory was first proposed by Nicolaus Copernicus. hope it helps</span>

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7. How many significant figures are in the following numbers?

Vlad1618 [11]

There are
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B.5 sig figs
C.2 sig figs
D.5 sig figs

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3 years ago

What is 1.23 x 10^-3 in standard notation

Andrew [12]

Answer:

=0.00123

Explanation:

Look at the attachments below

Hope this helps (:

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3 years ago

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1 What is the total number of valence electrons in the Lewis structure of C104?

Lera25 [3.4K]

There are 32 valence electrons for the Lewis structure for ClO4

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3 years ago

Give me a statement regarding the process of science discovery and development of atomic theory

matrenka [14]

Can you say please? Just kidding!
The process of science discovery depends upon changing your theories based upons new evidence from new experiments. New technology allows for new experiments, leading to new theories.

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3 years ago

Which term describes this molecular shape?

ICE Princess25 [194]

Answer:

B.) Trigonal planar

Explanation:

This molecule has 3 bonds and no lone pairs. The angles are all 120° and the bonds are within the same plane. These molecules have the molecular shape of trigonal planar.

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1 year ago