Help Me Plz :)
Sulphur burns according to the equation :
2S + 3O2 > 2SO3
What is the value of the change in the heat content when 0.75g of sulphur is burnt ?
a) +23 KJ
b) -9.25 KJ
C) -18 KJ
d) +12 KJ

Calculate the change in entropy if br2(l) is converted to br2(g). s° for br2(l) = 152.2 j/(mol•k) s° for br2(g) = 245.5 j/(mol•k) s° for br(g) = 175.0 j/(mol•k)

Which of the following statements is false regarding aromaticity? a. the compound must be cyclic b. the compound must be fully conjugated c. the compound must be planar d.the number of electrons in the pi system must satisfy the hückel 4n+2 rule e. the compound must have a neutral charge

The clouds are grey and ground is wet. a quantitative b qualitative