The answer is B.) Some plates move toward each other, while others move away from or alongside each other.
        
             
        
        
        
Answer:
 will be 90054 J
 will be 90054 J
Explanation:
Number of moles = (mass)/(molar mass)
Molar mass of  = 134.45 g/mol
 = 134.45 g/mol
So, 1.00 g of  =
 =  of
 of  = 0.00744 mol of
 = 0.00744 mol of 
0.00744 mol of  produces 670 J of heat
 produces 670 J of heat
So, 1 mol of  produces
 produces  of heat or 90054 J of heat
 of heat or 90054 J of heat
 
        
             
        
        
        
Answer:
1) acetylide
2) enol
3) aldehydes
4) tautomers
5) alkynes
6) Hydroboration
7) Keto
8) methyl ketones
Explanation:
Acetylide anions (R-C≡C^-) is a strong nucleophile. Being a strong nucleophile, we can use it to open up an epoxide ring by SN2 mechanism. The attack of the acetylide ion occurs from the backside of the epoxide ring. It must attack at the less substituted side of the epoxide.
Oxomercuration of alkynes and hydroboration of alkynes are similar reactions in that they both yield carbonyl compounds that often exhibit keto-enol tautomerism. 
The equilibrium position may lie towards the Keto form of the compound. Usually, if terminal alkynes are used, the product of the reaction is a methyl ketone.