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Marizza181 [45]
3 years ago
5

Earth's atmosphere, which traps heat and radiation from the sun, helps to keep our temperature somewhat stable, even when we are

rotated away from the sun at night. Question 1 options: True or False
Chemistry
2 answers:
Serga [27]3 years ago
7 0

Answer:

true

Explanation:

mark me brainliest

Elis [28]3 years ago
6 0

Answer:

It is true

Explanation:

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One property of metals is that they are: insulators brittle malleable none of these are properties of metals
wel
Metals are insulators and malleable. Hope this helps even though I'm late :)
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2 years ago
How many moles of mercury, Hg, are there in 1.30 x 10^7 atoms of murcury? PLEASE HELP, IT'S URGENT! Thank you! (:
vodka [1.7K]
1 mole Hg ---------------- 6.02x10²³ atoms
??  ------------------------- 1.30 x10⁷ atoms

1.30x10⁷ x 1 / 6.02x10²³ =

= 1.30x10⁷ / 6.02x10²³ => 2.159x10⁻¹⁷ moles

hope this helps!

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3 years ago
Carbon-14 is a common isotope of the element. How many electrons
eimsori [14]
I think 8 or 6 im not sure
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3 years ago
Find the kinetic energy of the horse using KE=1/2 mv².
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8 0
3 years ago
Read 2 more answers
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; 
i.e. <span>1⋅c<span>m3</span></span> = <span>1×<span><span>(<span>10<span>−2</span></span>⋅m)</span>3</span>=1×<span>10<span>−6</span></span>⋅<span>m3</span>=<span>10<span>−3</span></span>⋅L=1⋅mL</span>.

7 0
3 years ago
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