Given these reactions, where X represents a generic metal or metalloid 1) H2(g)+1/2 O2(g)⟶H2O(g)Δ1= −241.8 kJ

2) X(s)+2Cl2(g)⟶XCl4(s)Δ2= +139.7 kJ

3) 1/2H2(g)+1/2Cl2(g)⟶HCl(g)Δ3= −92.3 kJ

4) X(s)+O2(g)⟶XO2(s)Δ4= −531.1 kJ

5) H2O(g)⟶H2O(l)Δ5= −44.0 kJ

what is the enthalpy, Δ,
for this reaction?

XCl4(s)+2H2O(l)⟶XO2(s)+4HCl(g)

a gas, having a molecular weight of 13 kg/kmol and a kinematic viscosity of 0.25 cm2/s, flows through a pipe 0.25 m internal diameter and 5 km long at the rate of 0.4 m3/s and is delivered at atmospheric pressure.

it takes on an electronical energy

you did not give any options thus this is the best answer i can give to you with this little information you have given

> they are both natural and not man made

> they can be tracked and predicted by the right tools

-love shrooms