Answer:
C₅H₅N is weakest base due to it's lowest Kb values.
Explanation:
Basic strength of an organic base is directly proportional with Kb(base dissociation constant) value.
Since Pyridine (C₅H₅N) is weakest base due to its lowest Kb value.
The reason of low basicity are as follows
1) lone pair containing orbital of nitrogen is sp² hybridised which is more electronegative as compare to sp³ orbital.
2) The conjuagte acid of pyridine is least stable as compare to other conjugate acids of corresponding bases.
Answer:
Xenon hexafluoride's molar mass is about 245.28 g/mol
Formula mass is about 245.28 u.
Explanation:
So we want to find the formula mass of the XeF6 and there is a special formula for that.
You have to multiply the number of each element in XeF6 by the element's atomic mass.
The atomic mass of Xe is 131.293, and F's atomic mass is multiplied by 6, due to the 6 at the bottom. F's atomic mass is 18.998403, so we multiply the atomic number by 6, which would equal 113.990418. Round if you want, but it would equal mostly the same thing. Add it up to get ≈245.28, which is the same thing.
Therefore the formula mass of XeF6 is 245.28 u.
In an exothermic reaction, heat is transferred to the surrounding.
Hope this helps, have a great day ahead!
Answer:it reacts chemically to produce heat and gas with rapid expansion of matter. It is a rapid chemical reaction
Explanation:
Is B. The number of the atomic mass can increase or decrease because the number of neutrons is different.
