FeCl₂  +  2NH₄OH  →  Fe(OH)₂  +  2NH₄Cl
        
             
        
        
        
Answer:
19.8 kg of C₂H₂ is needed
Explanation:
We solve this by a rule of three:
If 1251 kJ of heat are relased in the combustion of 1 mol of acetylene
95.5×10⁴ kJ of heat may be released by the combustion of 
(95.5×10⁴ kJ . 1) /1251kJ = 763.4 moles of C₂H₂
Let's convert the moles to mass → 763.4 mol . 26 g/1 mol = 19848 g
If we convert the mass from g to kg →  19848 g . 1kg / 1000g = 19.8 kg
 
        
                    
             
        
        
        
Answer:
Explanation:
When going from top to bottom in any group of the periodic table, the atomic radius always tends to increase
 
        
             
        
        
        
Hello!
The fission of an atom that has a large atomic number can be induced by bombarding the atom with neutrons.
Nuclear fission occurs when a heavy nucleus divides into two or more lighter nuclei. This reaction is induced by the bombarding of neutrons into the nucleus, making it unstable (like throwing an orange to a perfectly arranged orange pyramid at the supermarket). The unstable nucleus breaks down into lighter elements, releasing more neutrons which contribute to the chain reaction.
Have a nice day!
        
             
        
        
        
1. The reaction is exothermic.
2. I know this because the delta H is a negative number. (-802.4 kJ) 
3. This means that this reaction releases heat.