Respuesta :
To solve this problem we just need to use the rule of three:
150g..................395.1J
450g................xJ
x = 450*395.1/150 = 1185,3J
450.0 g of the substance completely reacted with oxygen will produce 1.1853 kJ(kiloJoule)
150g..................395.1J
450g................xJ
x = 450*395.1/150 = 1185,3J
450.0 g of the substance completely reacted with oxygen will produce 1.1853 kJ(kiloJoule)
1.1853 kJ of energy is released by the 450.0 g of the given substance.
How to calculate the energy released?
When energy is released during the reaction it is called an exothermic reaction.
Given here,
150 g of substance release 395.1 J of energy,
450 g of substance release [tex]x[/tex] J of energy?
So,
[tex]x = \dfrac {450 \times 395.1 }{150 }\\\\x = 1185.3 {\rm \ J \ \ \ \ \ or }\\\\x = 1.185 \rm \ kJ[/tex]
Therefore, 1.1853 kJ of energy is released by the 450.0 g of the given substance.
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