The Correct choice is D. Fe + S = FeS
because, in nature Iron (Fe) and Sulphur (S) are found in mono - Atomic form. so, There will be 1 Fe atom reacting with 1 S atom to form FeS (Iron sulphide)
Volume = V = 250ml = 0.25 L
<span>M = 0.135M </span>
<span>Molar mass of AgNO3 = 108+14+3*16 = 170 </span>
<span>M = mole/V </span>
<span>mole = 0.135*0.25 = 0.03375 mole </span>
<span>mole = mass/molar mass </span>
<span>mass = 0.03375 * 170 = 5.7375 gr</span>
If we draw the lewis structure, we can see that all Cl
atoms are all connected to the B atom. Now Cl atoms has 7 electrons each on its
outermost shell while B can donate 3 electrons. So by octet rule, each Cl will
gain 1 electron each from the B atom. From the Lewis structure, we can see that
there are actually No Lone pairs on the central atom.
<span> </span>
Answer: 10.63
Explanation: You divide the mass by volume.