Is a unit of energy that can identify the amount of energy released or absorbed by a chemical reaction

a
kiloliters (kl)
b
kilojoules (kj)
c
kilopascals (kpa)
d
kilograms (kg)

When someone slams her books on a table the kinect energy is transferred into vibrations that travel to your ears as sound waves which statement describes the movement of those waves

In positive numbers less than 1, the zeros between the decimal point and a non-zero number are blank significant

Which type of energy is transferred by convection currents?