Answer:
![d=1.78\times 10^{-7}\ Dg/\mu m^3](https://tex.z-dn.net/?f=d%3D1.78%5Ctimes%2010%5E%7B-7%7D%5C%20Dg%2F%5Cmu%20m%5E3)
Explanation:
Given,
The density of Helium is ![1.78\times 10^4\ g/cm^3](https://tex.z-dn.net/?f=1.78%5Ctimes%2010%5E4%5C%20g%2Fcm%5E3)
We need to find the density in Dg/μm
We know that,
1 g = 10 dg
1 cm³ = 10¹² μm³
So,
![d=1.78 \times 10^4\ g/cm^3\\\\=1.78 \times 10^4\times \dfrac{10\ dg}{10^{12}\ \mu m^3}\\\\=1.78\times 10^{-7}\ Dg/\mu m^3](https://tex.z-dn.net/?f=d%3D1.78%20%5Ctimes%2010%5E4%5C%20g%2Fcm%5E3%5C%5C%5C%5C%3D1.78%20%5Ctimes%2010%5E4%5Ctimes%20%5Cdfrac%7B10%5C%20dg%7D%7B10%5E%7B12%7D%5C%20%5Cmu%20m%5E3%7D%5C%5C%5C%5C%3D1.78%5Ctimes%2010%5E%7B-7%7D%5C%20Dg%2F%5Cmu%20m%5E3)
So, the density of Helium is equal to
.
I am pretty sure that <span>If I were asked to compare matter in solid, liquid, and gaseous states, the statement which would best defined a gas is </span>highest energy, highest molecular motion, and least dense packaging of molecules. I choose this one because it's not sensible to <span>heat CO2 (in case of safety) and in the last option the amount of energy is not satisfying.
Hope it helps!</span>
True because it is warmer closer to the equator
Metals:
<span>Distinguishing luster (shine)
</span><span>Malleable and ductile (flexible) as solids
</span><span>Conduct heat and electricity
</span><span>Metallic oxides are basic, ionic
</span><span>Cations in aqueous solution
</span>
Nonmetals:
<span>Non-lustrous, various colors
</span><span>Brittle, hard or soft
</span><span>Poor conductors
</span><span>Nonmetallic oxides are acidic, compounds
</span><span>Anions, oxyanions in aqueous solution
</span>