What will be the name of this hydrocarbon ? 2,3 dimethyl nonane
2,3 dimethyl ,4 ethyl heptane
2,3 dimethyl ,4 propyl hexane
4 ethyl 2,3 dimethyl heptane
with explanation ,please

Which statement best describes the he properties of iconic compounds ?

Imagine that a new planet is discovered with two moons of equal mass: moon a and moon b. the mass of the new planet is greater than the combined mass of its moons. moon a is farther away from the new planet than moon b. what is the planet's gravitational pull on moon a compared to the planet's gravitational pull on moon b? the planet's gravity repels moon a with a greater force than it repels moon b, which is why moon a is farther away. the gravitational pull on moon b is greater than on moon a because moon b is closer to the new planet than moon a. the gravitational pull on moon b is greater than on moon a because moon b is farther away from the new planet than moon a. the gravitational pull on moon a is the same as the gravitational pull on moon b because distance does not affect the planet's gravity.

8) warming your hands by a fire is an example if which heat transfer? a. conduction b. convection c. radiation d. none of these