I think the answer is a or d
Molar mass NH3 = 17.031 g/mol
1 mole NH3 -------------- 17.031 g
?? moles NH3 ---------- 346 g
346 x 1 / 17.031
=> 20.31 moles of NH3
Answer:
The chemical formula is I2F9
Explanation:
In diatomic molecule, the distance between the centers of two atoms is 1.22
.
Converting
to m:
Since, 1
=![10^{-10} m](https://tex.z-dn.net/?f=10%5E%7B-10%7D%20m)
Thus,
1.22
=![1.22\times 10^{-10} m](https://tex.z-dn.net/?f=1.22%5Ctimes%2010%5E%7B-10%7D%20m)
Now, Converting m to feet:
1 m=3.28 feet
Thus,
![1.22\times 10^{-10} m=1.22\times 10^{-10}\times 3.28 feet=4\times 10^{-10}feet](https://tex.z-dn.net/?f=1.22%5Ctimes%2010%5E%7B-10%7D%20m%3D1.22%5Ctimes%2010%5E%7B-10%7D%5Ctimes%203.28%20feet%3D4%5Ctimes%2010%5E%7B-10%7Dfeet)
Therefore, distance in feet is ![4\times 10^{-10}](https://tex.z-dn.net/?f=4%5Ctimes%2010%5E%7B-10%7D)
Heat energy = MCΔT; where m is the mass, c is the specific heat capacity; while ΔT is the change in temperature.
Mass is 100 g , while change in temperature 50°C and heat energy is 23.5 kJ or 23500 j
Hence; 23500 = 100 × c ×50
c = 23500/5000
= 4.7 j/g/°c or 4700 J/Kg/°C
The substance is ammonia since it has the specific heat capacity is 4.7 J/g/°C