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natulia [17]
3 years ago
14

Give an example of an adaptation.

Chemistry
1 answer:
lana66690 [7]3 years ago
3 0

Never gonna give you up

let you downnnn

never gonna turn around

and hurt youu

never gonna make you cryy

sayyyyy goodbyeeee

tell a lie

or hurt youuuuuuuuuuuuu

ha get rick rolled nerd

goodbye

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Which cells produce photosynthesis
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Hey there,

Answer:

Photosynthetic cell

Hope this helps :D

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If the oxidation number of nitrogen in a certain molecule changes from +3 to -2 during a reaction, is the nitrogen oxidized or r
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The nitrogen has been reduced or has undergone reduction and it has gained one electron
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The chemical bonding in sodium phosphate, Na3PO4, is classified as:
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<span>Ionic bonding between sodium and phosphate ions.</span>
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Look at the diagram below.
Kazeer [188]

Answer:

3rd statment

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5 0
3 years ago
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The diameter of the He He atom is approximately 0.10 nm nm . Calculate the density of the He atom in g/cm 3 g/cm3 (assuming that
Sladkaya [172]

Answer:

Density of the He atom = 12.69 g/cm³

Explanation:

From the information given:

Since 1 mole of an atom = 6.022x 10²³ atoms)

1 atom of He = 1  \ atom \times  (\dfrac{1  \ mole}{  6.022 \times  10^{23}  \ atoms}) \times ( \dfrac{4.003 \ grams}{  1  \ mole})

=6.647 \times  10^{-24} \  grams

The volume can be determined as  folows:

since the diameter of the He atom is approximately 0.10 nm

the radius of the He = \dfrac{0.10}{2} = 0.05 nm

Converting it into cm, we have:

0.05 nm \times  \dfrac{10^{-9} \  meters}{ 1  nm} \times \dfrac{ 1 cm }{10^{-2} \ meters}

=5 \times  10^{-9}  \ cm

Assuming that it is a sphere, the volume of a sphere is

= \dfrac{4}{3}\pi r^3

= \dfrac{4}{3}\pi  \times (5\times 10^{-9})^3

= 5.236 \times 10^{-25} \ cm^3

Finally, the density can be calcuated by using the formula :

Density = \dfrac{mass}{volume}

D =  \dfrac{6.647 \times  10^{-24} \  grams }{ 5.236 \times 10^{-25} \  cm^3}

D = 12.69 g/cm³

Density of the He atom = 12.69 g/cm³

4 0
3 years ago
Read 2 more answers
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