3Mg + N₂= Mg₃N₂
n(Mg)=12,2g÷<span>24,4g/mol=0,5mol-limiting reagent
</span>n(N₂)=5,16g÷28g/mol=0,18mol
n(Mg₃N₂):n(Mg)=1:3, n(Mg₃N₂)=0,166mol, m(Mg₃N₂)=0,166·101,2=16,8g.
%(N)= 2·Ar(N)÷Mr(Mg₃N₂) = 2·14÷101,2=27,66%=0,2766
%(Mg) = 3·Ar(Mg)÷Mr(Mg₃N₂)= 3·24,4÷101,2=72,34% or 100% - 27,66%= 72,34%.
Fluorine is a nonmetal and as such it would need to take in or obtain an electron from a metal to have a stable octet, or full number of 8 electrons in its valence shell. Thus due to the indifference of electrons and protons it becomes an anion, a negatively charged ion.
Answer:
Yes
Explanation:
The tilt of the Earth means the Earth will lean towards the Sun (Summer) or lean away from the Sun (Winter) 6 months later. In between these, Spring and Autumn will occur. The North pole always points the same way as the Earth revolves around the Sun.
No, the added heat melts the ice, but the result is water at the same temperature. Hence, option B is correct.
<h3>What is temperature?</h3>
The degree of hotness or coldness is measured on a definite scale.
Temperature doesn't change as heat is added during a phase change; for example, when the ice melts.
During the phase change, the added heat doesn't make the molecules move faster, but rather further apart.
Thus, No, the added heat melts the ice, but the result is water at the same temperature.
Learn more about the temperature here:
brainly.com/question/11464844
#SPJ1
なたはたさたやたはたはたはたはやはたはたなたな田畑な田畑の
