What is the process of the intake stroke in a 4 stroke engine in terms of the pressure, volume, temperature, and moles of gas present

a polar bond is formed when electrons are shared unevenly between atoms

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.