The the following information to answer written response question 1 .

Pentaborane-9, (1), is a colourless, highly reactive liquid that will burst into flame or even explode when exposed to oxygen. In the 1950s. it was considered as a potential rocket fuel.

The reaction is  

 

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Written Response #1

a) Determine the enthalpy of combustion of pentaborane 9 and communicate the enthalpy change for the balanced reaction. ( 2 marks) (A 1.9 k, A 1.4k )

 

b) Calculate the energy released per gram of pentaborane-9 that reacts. (2 marks) (A 1.9 k, A 1.4k )

Does anyone have the expertise to help with this problem? Ismore information needed to solve it? Please help if youcan.

Need step by step answer to Step Cfor the following problem:

Beginning with 150.0 mL of 0.175 M ammonia, determine thesolution’s pH after each of the following steps:

b) after 25.0 mL of 0.200 M nitric acid, HNO3, is added(Answer to this step is pH =9.88)

c) after 25.0 mL of 0.400 M ammonium chloride is added to thesolution resulting from step (b),

Given the answer to Step b, what isthe answer to step c?

Write equations for the stepwise formation of each of the following complex ions. (Use the lowest possible coefficients. Omit states-of-matter in your answer.)

(a) Ni(CN)42- step 1 step 2 step 3 step 4

(b) V(C2O4)33- step 1 step 2 step 3 step 4

Please answer step by step and explain.