Answer: 0.087 grams will produce 1620.J of heat.
Explanation:
Amount of heat released when 1 gram of reactant is consumed= 18.5 kJ = 18500 J (1kJ=1000J)
According to avogadro's law, 1 mole of every substance occupies 22.4 L at NTP, weighs equal to the molecular mass and contains avogadro's number [tex]6.023\times 10^{23}[/tex] of particles.
Thus we can say:
18500 J is released by consumption of reactant = 1 gram
Thus 1620 J is released by consumption of reactant = [tex]\frac{1}{18500}\times 1620=0.087[/tex]
Thus mass of reactant that will produce 1620 J of heat is 0.087 grams
