It's the third statement!
Earth spins at 23.5
A day is one rotation
Deutirium is the name of H-2 isotope
Answer:
Lead
Explanation:
While taking sample from flint's distillery, theybfoind 13000 ppb or parts per billion lead in the water itself
Answer: 12033 kJ of heat produced per kg of formed during the combustion of benzene
Explanation:
The balanced chemical equation for combustion of benzene is :
= -6278 kJ
Exothermic reactions are defined as the reactions in which energy of the product is lesser than the energy of the reactants. The total energy is released in the form of heat and for the reaction comes out to be negative.
(1kg=1000g)
According to stoichiometry :
12 moles of on combustion produce heat = 6278 kJ
Thus 23 mole of on combustion produce heat =
Thus 12033 kJ of heat produced per kg of formed during the combustion of benzene