If the attractive forces in a substance is much less than the
molecular motion, then the substance will be in
state.
a
Solid
b Liquid
c Gaseous
d Both Solid and Liquid

If the attractive forces in a substance is much less than the

molecular motion, then the substance will be in a "Gaseous" state.

Explanation:

When decreasing the attractive forces in a substance and making it "much" less than the molecular motion in the substance, the substance should be in a gaseous state.

When the average kinetic energy of a substance or object is small enough that the attractive forces is stable enough to hold all of the particles close together, the molecules in liquids and solids do not move apart.

If the average kinetic energy of a substance or object is great enough (greater than the attractive forces) to overpower the attractive forces between them, the molecules are able to move apart. This would mean that the substance is in a gaseous state.

Overall, if the attractive forces are less than the molecular motion then the molecular motion will over power the attractive forces, breaking the molecules apart and letting them move freely as molecules in a gaseous substance would.

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.

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.