If you look at the standard heat formation table, why are some values zero?Choose all that applies Single elements in their standard states have a heat of formation of 0 kJ/mol

No answer is correct

Diatomic elements in their standard states have a heat of formation of O kJ/mol

Single elements have no kinetic or potential energy

2b2t

explanation:

2b2t

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.

c. is the answer

by love gaming

a). in this case, dh> 0 and sd> 0. if t becomes larger, the term "-tds" will become more negative. at some point, it is possible that -dts will be more negative than the dh is positive, and the reaction will become spontaneous. this is probably the correct answer, but you should look at all of the other possibilities and make sure of that.