I’m pretty sure it will be the answer choice B
Answer:
Yes.
Explanation:
Hydrogen-filled balloons were widely used by the militaries during World War I (1914–1918). The main purpose of these hydrogen-filled balloons to detect movements of enemy troops and to provide direction to the artillery fire. Balloons were the targets of opposing aircraft because they knew the purpose of these balloons so they hit it whenever seen by the enemies so we can say that both sides used hydrogen-filled balloons as military observer to watch the enemy's movements.
F - Fluorine
Explanation:
Fluorine is the atom that is most able to attract electrons to itself among the choices. The ability of an atom to attract electron to itself is called electronegativity.
- Electronegativity is a measure of the relative tendency with which atoms of an element attracts valence electrons in a chemical bond.
- Fluorine is the most electronegative element on the periodic table.
- According to Pauling's table on electronegativities of elements, it has a value of 4.0.
- This is the highest on the periodic table of elements.
Learn more:
Electronegativity brainly.com/question/7007192
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the correct answer is 1.2812 x 10^23. you can get this by multiplying .23 x arogados number / the molar mass of boron (10.81)
Waters freezing point in Celsius is 0 and 273.15 Kelvin (or 273 rounded to a whole number.
