1 mole Fe produces 1 mole Cu 
<span> molar mass of Fe is 55.8 g / mole 
 
answer: </span><span>55.8g</span>
        
             
        
        
        
Answer:
In gamma-ray astronomy, gamma-ray bursts are immensely energetic explosions that have been observed in distant galaxies. They are the brightest and most energetic electromagnetic events known to occur in the universe. Bursts can last from ten milliseconds to several hours. b 
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Answer:
When a molecule is excited to a higher state it often ends up in its lowest excited state S1 and then emits radiation. 
 
        
             
        
        
        
Answer:
m = 65.637 g
Explanation:
Heat = 0.612 kJ = 612 J ( Converting to J by multiplying by 1000)
Initial Temperature =  30.°C
Final Temperature = 51°C
Temperature change = Final Temperature - Initial Temperature = 51 - 30 = 21°C
Mass = ?
The relationship between these quantities is given by the equation;
H = mCΔT
where c = 0.444 J/g°C
Inserting the values in the equation;
612 = m *  0.444 * 21
m = 612 / (0.444 * 21)
m = 65.637 g