Answer : The density is, 
Explanation :
Formula used :
.............(1)
where,
= density = ?
Z = number of atom in unit cell (for BCC = 2)
M = atomic mass of barium = 137.3 g/mole
= Avogadro's number = 
a = edge length of unit cell = 
Conversion used : 
Now put all the values in above formula (1), we get
Thus, the density is,
- A piece of copper wire that is 180 cm long is 1800 mm long in millimeters.
- 45 segments of 40mm long can be cut from 1800 mm length of wire.
<h3>How to convert cm to mm?</h3>
Centimeters and millimeters are both interconvertible units to measure length. The conversion factor is as follows:
1 centimetre = 10 millimetres
This means that if a copper wire is 180cm long, the wire would be;
180 × 10 = 1800mm long
Also, the number of 40 mm segments of wire that can be cut from the length is calculated as follows:
1800mm/40mm = 45
Learn more about conversion at: brainly.com/question/12103054
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Answer: Javier's
Comparison shows what they have in common and what they don't.
Carbon Dioxide: Carbon atom with two oxygen atoms.
Water: Two hydrogen atoms with one oxygen atom.
Javier's perfectly shows both.
<em>Hope this helps and have a great day!!!</em>
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NaH is an ionic compound as shown below, and is made of sodium cations (Na+) and hydride anions (H-). It has the same octahedral crystal structure as NaCl, with each sodium ion surrounded by six hydride ions. The free hydride ions give this molecule its strong basic character. hope this helps
<span>Forward & falling. Hope this helps!</span>
