What are charged atoms of elements that have an unequal number of protons and electrons?

What is a kilogram?

What does variable mean

Coal is transported from mine to plant via "unit trains" that usually consist of 100 cars each carrying 100 tons of coal. If one car carries exactly 80 tons of carbon (in the form of coal), calculate the number of kg-moles of carbon in the car.

Convert 23 calories into kcal

A solution has [oh-] = 2.3*10-2 m. use the ion product constant of water kw=[h3o+][oh-] to find the [h3o+] of the solution.

When DNA is condensing into a chromosome, what protein is it wrapped around?

How does tye transfer of energy affect physical and chemical properties of matter

According to valence bond theory, which kind of orbitals overlap to form the p-cl bonds in pcl5?

Ionic bonds are strong; therefore, ionic compounds

A cells that carry information through tour nervous system