Answer:
A. 3Mg + N₂ → Mg₃N₂
Explanation:
This is a multiple choice question, so the correct answer is in one of the options.
A. is correct. It has three atoms of Mg and two of N on each side of the equation.
B. is wrong. It has four atoms of N on the left and two on the right.
C. is wrong. It has six atoms of Mg on the left and nine on the right.
D. is wrong. It has one atom of Mg on the left and three on the right.
Okay thanks for the update I will give you a call when you get home thanks
Molar mass O2 = 31.99 g/mol
Molar mass CO2 = 44.01 g/mol
Moles ratio:
<span>C3H8 + 5 O2 = 3 CO2 + 4 H2O
</span>
5 x 44.01 g O2 ---------------- 3 x 44.01 g CO2
( mass of O2) ------------------ 37.15 g CO2
mass of O2 = 37.15 x 5 x 44.01/ 3 x 44.01
mass of O2 = 8174.8575 / 132.03
mass of O2 = 61.916 g
Therefore:
1 mole O2 ----------------- 31.99 g
moles O2 -------------------- 61.916
moles O2 = 61.916 x 1 / 31.99
moles = 61.916 / 31.99 => 1.935 moles of O2
N just use a electronegativity table
With all metals, the transition elements are both ductile and malleable, and conduct electricity and heat.