Answer:
<h2>B. Kinetic energy</h2>
Explanation:
According to research :
Thermal energy comes from a substance whose molecules and atoms are vibrating faster due to a rise in temperature. Heat energy is another name for thermal energy. Kinetic energy is the energy of a moving object. As thermal energy comes from moving particles, it is a form of kinetic energy.
Amount of Niobium-91 initially
= 300/91 =3.2967mol
2040 years = 3 ×680 = 3 half-lives
therefore, amount left = 0.4121mol
mass of Niobium-91 remaining = 0.4121 ×91 =37.5g
An intensive property is a bulk property, meaning that it is a local physical property of a system that does not depend on the system size or the amount of material in the system.
Answer:
The correct answer is HCl
Explanation:
There is a dipole-dipole force in hydrochloric acid (HCl), this type of attraction occurs in polar covalent molecules. In this case, the positive end of the molecule (H) attracts the negative (Cl).
