Your answer is 92 i just took test
Answer:
B and BBr3
Explanation:
1) 3HBr + B = BBr3 + H2 (double all equation because H2)
2) 6HBr + <em>2B </em>= <em>2BBr3</em> + 3H2
I think the correct answer 3. A solution is a type of mixture having a uniform composition where the components can't be seen separately and all components are in the same state. It is considered as a homogeneous mixture where at any point the properties and the concentration of the solution would have the same value.
Boiling point of ethanol is 78.5
of ethanol is
The relationship between boiling point elevation of a solution and molality can be represented as,
Δ
Molality of the solution (m) =
= 0.234 m
Therefore the boiling point of solution will be 73.8
Answer : Option C) A meltdown.
Explanation : When a nuclear fission reaction is conducted, and if it loses its control it will produce many neutrons which will be difficult to bring under control; for this purpose the nuclear reactors are built with the control rods which absorb the extra neutrons and help the reaction to be in control.
If this is not done, it may result in complete meltdown of the reactor as neutrons have high energy in them.